OBD-II Code B2305: Wiper Park Switch Circuit Fault

What Does B2305 Mean?

The B2305 code means your car's main computer is not receiving the correct signal from the windshield wiper system. The computer cannot determine if the wipers are in the 'park' position (their resting spot at the bottom of the windshield). Consequently, your wipers stop in the wrong place, fail to turn on, refuse to turn off, or operate on only a single speed.

Technical definition: The SAE/ISO definition for B2305 is "Wiper Park Switch Input Circuit High". The control module (TIPM, FCM, or BCM) detects that the voltage on the park switch sensor circuit remains higher than expected. The computer expects a 5V or 12V reference signal to drop to near zero volts when the internal park switch closes at the bottom of the wiper's travel. This code sets when the module sees a constant high voltage, indicating an open circuit or a short to voltage.

Can I Drive With B2305?

Yes, But With Caution. Yes, you can drive the vehicle, but it is extremely hazardous in any precipitation. A sudden downpour reduces visibility to near-zero instantly, dramatically increasing accident risk. Non-functional wipers also guarantee a failed state safety inspection and potential traffic fines.

Common Causes

• Faulty Windshield Wiper Motor (Internal Park Switch Failure) (Very Common) — The park switch is built directly into the wiper motor. When this internal switch fails, its contacts corrode, or water intrudes into the housing, it cannot ground the sense circuit. You must replace the entire wiper motor assembly.
• Binding or Seized Wiper Linkage (Common) — Wiper transmission arms corrode and seize, putting immense strain on the wiper motor. This overload destroys the internal park switch or plastic gears. The motor failure is a direct symptom of the binding linkage.
• Damaged Wiring or Loose Connectors (Common) — The signal wire from the wiper motor to the computer breaks, frays, or shorts to a power source. Water intrusion at the connector or chafing near the firewall creates an open circuit.
• Faulty Totally Integrated Power Module (TIPM) (Less Common) — On Chrysler, Dodge, Jeep, and Ram vehicles, the TIPM controls the wipers. Internal circuit board failures or burnt non-serviceable relays prevent the TIPM from correctly interpreting the park switch signal.
• Faulty Multifunction Switch (Rare) — The steering column stalk sends the driver's request to the control module. A failure here occasionally causes electrical feedback or incorrect LIN-Bus network signals, contributing to the fault.
• Bad Wiper Relay (Rare) — A stuck or failed wiper relay in the fuse box causes erratic wiper behavior and triggers related electrical faults. It is a simple and inexpensive part to check.

Symptoms

• Wipers stop in the middle of the windshield — When you turn the wipers off, they stop immediately wherever they are instead of returning to the bottom.
• Wipers do not work at all — The wiper system is completely unresponsive when you try to turn it on.
• Wipers will not turn off — The wipers keep running even when the switch is in the 'off' position because the system never receives the 'parked' signal.
• Wipers only work on one speed — Only the highest wiper speed setting works, while lower speeds and intermittent settings are inoperative.
• Check Engine Light or other warning light is on (also visible on scanner) — The vehicle's computer illuminates a warning light on the dashboard to indicate a detected fault.

Diagnostic Flowchart

Tap your situation to follow the diagnostic path that matches what you're seeing on this code.

Common Fixes & Costs

• Replace the Windshield Wiper Motor — Parts: $50-$225, Labor: $100-$250, ~1.5 hr book time (Intermediate)
• Replace Wiper Linkage/Transmission — Parts: $50-$150, Labor: $80-$200, ~2 hr book time (Intermediate)
• Repair Damaged Wiring — Parts: $5-$20, Labor: $100-$400, ~2 hr book time (Intermediate)
• Replace the Totally Integrated Power Module (TIPM) — Parts: $400-$1500, Labor: $150-$300, ~1.5 hr book time (Professional)
• Replace Multifunction Switch — Parts: $50-$330, Labor: $80-$170, ~1 hr book time (Intermediate)
• Replace Wiper Relay — Parts: $10-$30, Labor: $0, ~0.1 hr book time (DIY)

Used vs. New Parts: Buying Guide

When a used part is worth it: For the wiper motor, a used part from a low-mileage vehicle (under 80k miles) is a cost-effective option. For the expensive TIPM failure, a professionally rebuilt unit with a warranty is a better value than a new OEM part and safer than a used one from a junkyard.

Donor-vehicle mileage cap: roughly under 80000 miles for the part to have meaningful remaining life.

Donor quality checklist:

• Verify the donor vehicle was not scrapped due to flood or fire damage.
• Match the part number exactly. Superseded numbers are often incompatible for control modules.
• When buying a used TIPM, ensure the seller has a return policy, as it requires programming and its history is unknown.

Decision logic:

• If The failed part is the wiper motor on a vehicle with less than 100k miles → Buy a new aftermarket or OEM part for better longevity and warranty.
• If The vehicle is over 150k miles and the budget is tight → A used wiper motor is an acceptable risk. Inspect linkage to protect the replacement part.
• If The failed part is the TIPM → Favor a professionally rebuilt unit with a warranty over a used one with no history. A new OEM unit is the most reliable but most expensive option.

Warranty tradeoff: Used parts from a salvage yard typically offer a 30-90 day warranty. Remanufactured/rebuilt parts (especially TIPMs) often come with a 1-year or lifetime warranty. New aftermarket parts usually have a 1-year to limited lifetime warranty.

Worst-case if a used part fails: $200-$500 if a used wiper motor fails (repeat labor + another part). $800-$1800 if a used or poorly rebuilt TIPM fails, requiring repeat labor, programming fees, and another module.

What Happens If You Wait — Timeline

1. Immediate: Wipers fail to park, stopping mid-windshield, or become completely inoperative. A warning light appears on the dash. Immediate and significant safety risk in precipitation. (MPG impact: 0%% · Added cost: $50-$250 (Potential traffic ticket for non-functional safety equipment).)
2. Days to Weeks: The vehicle fails any state-mandated safety inspection due to inoperative wipers, preventing registration renewal. The annoyance of non-parking wipers continues. (MPG impact: 0%% · Added cost: $0 (beyond the eventual repair cost).)
3. Weeks to Months (if root cause is binding linkage): If the wipers are used intermittently and the underlying cause is a seized linkage, the constant high amp draw eventually burns out the wiper motor completely. A problem solved by lubricating a $100 linkage now requires a new motor. (MPG impact: 0%% · Added cost: $150-$475 (Cost of a new wiper motor and linkage, plus labor, that could have been avoided).)
4. Months (if root cause is a failing TIPM): If the B2305 code is an early symptom of TIPM failure, ignoring it leads to other critical systems failing. The vehicle develops a no-start condition, stalling, or random electrical problems as the TIPM degrades. (MPG impact: 0%% · Added cost: $800-$1800+ (Cost of diagnosing and replacing a failed TIPM).)

Cost of Not Fixing It

• Immediate: Extreme safety hazard due to lack of visibility in rain or snow, dramatically increasing accident risk. Potential for a traffic ticket for non-operational safety equipment. (Added cost: $50-$250+ (for traffic citation, varies by state).)
• Short Term (Days to Weeks): Failure to pass a mandatory state safety inspection, preventing vehicle registration renewal. (Added cost: $0 (beyond the cost of the eventual repair).)
• Long Term (Months): If the root cause is a binding linkage, continuing to use the wipers causes a replacement motor to burn out. If the cause is a failing TIPM, other unrelated electrical problems begin to appear throughout the vehicle. (Added cost: $150-$2000+ (cost of a new wiper motor or TIPM if secondary damage occurs).)

Diagnosis Steps

1. Scan for Codes and View Live Data
   Use an OBD-II scanner to confirm B2305. Navigate to the BCM/TIPM live data and find 'Wiper Park Switch Sense'. It will read 'False', 'High', or show an unchanging voltage. Clear the code and cycle the wipers; immediate return indicates a hard fault.
   Tools: OBD-II scanner with live data capability (Beginner)
2. Test the Park Switch Circuit at the Connector
   Disconnect the wiper motor. With the key on, use a jumper wire to connect the park switch sense pin in the harness directly to a chassis ground. If the scan tool's 'Wiper Park Switch Sense' PID changes to 'True' or 'Low', the wiring and control module are perfect. The fault is 100% inside the wiper motor.
   Tools: Multimeter, vehicle-specific wiring diagram, jumper wire, OBD-II scanner (Intermediate)
3. Check for Binding Linkage
   Disconnect the linkage from the motor. Move the wiper arms by hand through their full range. If they feel stiff, gritty, or seized, the linkage is bad and destroyed the motor. A new motor will fail immediately if connected to bad linkage.
   Tools: Basic hand tools (ratchet/sockets) (Intermediate)
4. Check Fuses and Relays
   Locate the wiper fuses (typically 20-30 Amps) and relays. Check for blown fuses and swap the wiper relay with an identical one (like the horn relay) to rule out a simple relay failure.
   Tools: Owner's manual, fuse puller or pliers (Beginner)
5. Visually Inspect the Wiring
   Inspect the wiring harness connecting to the wiper motor. Look for chewed wires, melted plastic, or green corrosion, especially where the harness passes through the firewall.
   Tools: Flashlight (Beginner)
6. Perform a Motor Amp Draw Test
   Clamp a low-amp current probe around the motor's main power wire. A healthy motor draws 2-5 amps on a wet windshield. Spikes above 7 amps indicate excessive resistance from a binding linkage or failing motor.
   Tools: Low-amp current probe, multimeter or oscilloscope (Advanced)
7. Suspect the Control Module (TIPM/FCM/BCM)
   If grounding the sense wire (Step 2) does NOT change the fault status on the scan tool, the control module is faulty. Replace this expensive part only after definitively exhausting all wiring tests.
   Tools: Advanced diagnostic tools (Professional)

When This Code Triggers (Freeze-Frame Conditions)

• Wiper Switch Status: Off (Code sets when the driver turns the wipers off, but the module does not see the park switch signal change from high to low voltage as expected.)
• Battery Voltage: 12.0 - 14.5V (The fault is monitored whenever the ignition is on.)
• Wiper Park Switch Sense: High / Open / False (The control module (TIPM) continuously sees a high voltage on the sense circuit and never sees it drop to ground.)
• Ambient Condition: During or after precipitation/frost (The fault often appears after the wipers have been under a heavy load, such as being used with frost on the windshield or in heavy snow.)

Related Codes

• B2304 — This is the direct opposite code, "Wiper Park Switch Input Circuit Low". The computer sees a constant ground signal when it shouldn't. For B2305 (High), you test for an open circuit; for B2304 (Low), you test for a short to ground.
• B2303 — This code means "Wiper Park Switch Input Circuit Open". The control module sees no signal at all, which happens if a wire is completely broken. All three codes (B2303, B2304, B2305) point to the exact same set of components.
• U0141 — This is a communication code, "Lost Communication With Front Control Module/Body Control Module". Seeing this alongside B2305 strongly indicates a failing control module (BCM/TIPM) rather than a simple wiper motor issue.
• B2348 / B234C — These codes for "Wiper Speed Sense Circuit Low" or "High" appear alongside B2305 on Dodge/Ram trucks. Multiple wiper-related codes point strongly toward a central fault in the wiper motor or the control module.

Climate & Environmental Factors

• Cold Weather, Snow, and Ice: Attempting to operate wipers frozen to the windshield puts extreme strain on the motor and linkage. This is the primary event that causes a worn park switch or linkage pivot to fail, triggering the B2305 code.
• High Humidity and Road Salt: In regions where road salt is used, wiper linkage pivot points are highly susceptible to corrosion and seizure. This binding increases the motor's amp draw, leading to overheating and internal failure of the park switch.

How to Talk to a Mechanic About This Code

Say this: "I have a B2305 code and my wipers are not parking correctly. I'd like to schedule a diagnostic. Based on my research, this is often the wiper motor's internal park switch, wiring, or the TIPM. Can you please start by testing the park switch sense circuit at the motor connector to isolate the fault before recommending any major parts?"

This signals to the shop that you are an informed consumer. It directs them to perform a specific, efficient diagnostic test (isolating the motor from the control module) and prevents them from simply guessing or replacing the most expensive part first.

Avoid saying:

• 'My wipers are acting weird.'
• 'My check engine light is on, can you just fix it?'
• 'Do whatever you think is best.'

Questions to ask before authorizing the repair:

• What were the results of the park switch circuit test when you grounded the sense wire? Did the live data PID change on the scan tool?
• Did you inspect the wiper linkage for any binding or stiffness?
• If you are recommending a TIPM replacement, what specific tests confirmed the TIPM is faulty and not the wiring or motor?
• Can you provide me with a detailed, itemized estimate including parts, labor, and taxes?
• What is the warranty on the recommended parts and the labor for this repair?

Where to Take It: Dealer vs Independent vs Chain

• Dealer: A safe but expensive choice. Recommended if a TIPM/BCM failure is confirmed and the vehicle is newer, or if you are uncomfortable vetting independent shops.
  Best for: Vehicles under warranty., Complex TIPM/BCM failures that require manufacturer-specific programming., When you want to ensure only OEM parts are used and are less sensitive to cost.
  Downsides: Highest labor rates, often 1.5-2x more than an independent shop., More inclined to replace an entire assembly rather than perform a targeted repair. (Typical cost: +50% vs. baseline)
• Independent Shop: Best fit for most out-of-warranty vehicles. A good independent shop easily diagnoses and fixes a B2305 code at a significant saving. Look for shops with ASE-certified technicians and positive reviews for electrical work.
  Best for: Out-of-warranty vehicles where cost is a factor., Diagnosing and replacing common failure items like the wiper motor or repairing wiring., Shops that specialize in automotive electrical systems.
  Downsides: Quality and diagnostic capabilities vary widely; vetting is crucial., Lacks the expensive, specialized tools for programming new control modules on certain brands. (Typical cost: +0% vs. baseline)
• Chain Shop: AVOID for diagnosis. While they replace a wiper motor if you tell them to, they are not the right choice for accurately diagnosing the root cause of a B2305 code.
  Best for: Simple, routine maintenance like oil changes, tires, and batteries.
  Downsides: Technician skill varies dramatically., Lacks the advanced diagnostic tools and training for complex electrical faults like B2305., More likely to guess or 'throw parts' at the problem rather than perform a precise diagnosis. (Typical cost: -10% vs. baseline)

When to Walk Away From the Repair

If the estimated repair cost exceeds 40-50% of the car's private-party value, seriously consider selling or trading it in instead of repairing it.

• Car worth $4000, fix is $1500: Walk away. A $1,500 repair for a TIPM replacement is nearly 40% of the car's value and isn't a wise investment.
• Car worth $15000, fix is $450: Fix it. A $450 wiper motor replacement is well below the threshold and restores a critical safety feature.
• Car worth $2500, fix is $1500: Walk away. The repair cost is 60% of the car's value. It's time to move on.

What Scan Tool You Need for This Code

Minimum: A scanner that reads manufacturer-specific Body Control Module (BCM) codes and displays live data PIDs. A basic engine-only code reader will not see a 'B' code.

A $20 scanner typically only reads 'P' (Powertrain) codes from the engine computer (ECM). Code B2305 is a 'B' (Body) code stored in the BCM or TIPM. You need a tool that accesses these modules to view the live data for the 'Wiper Park Switch Sense' to perform a proper diagnosis.

Budget: BlueDriver Pro Scan Tool (~$100) — Connects to your smartphone via Bluetooth. It reads and clears BCM codes and displays the necessary live data to confirm if the park switch signal is changing, which is essential for diagnosing B2305.

Mid-range: Innova 5610 or Foxwell NT530 (~$350) — These handheld units offer bidirectional controls. This allows you to command the wipers on and off directly from the scanner, helping to test the control circuit. They provide robust live data graphing and access to nearly all vehicle modules.

Professional: Autel MaxiCOM MK808S or Launch CRP919X (~$360-500) — Offers full bidirectional control, comprehensive system access, and advanced diagnostic functions. These tools are ideal for professionals or serious DIYers who diagnose complex electrical issues across many different vehicle makes and models.

Rent vs buy: You can try the free tool loaner program at auto parts stores, but their basic scanners often cannot read BCM codes. If their loaner tool can't see the code, you must buy one. For a one-time fix, a budget pick like the BlueDriver is a worthwhile investment.

How to Clear the Code After You Fix It

1. Reconnect any disconnected components (wiper motor, battery).
2. Use an OBD-II scan tool to clear the B-codes from the Body Control Module or TIPM.
3. Cycle the ignition off and then on.
4. Operate the wipers through all speed settings and turn them off to verify they park correctly and the code does not return.

Drive cycle (~5 minutes): A formal drive cycle is not required. After clearing the code, simply test the wiper functions. If the repair was successful, the code will not reappear. A temporary 'TIPM reset' is achieved by disconnecting the battery for several minutes, but this is not a permanent fix if a hardware fault exists.

Readiness monitors affected: None

Watch out for:

• Clearing the code without fixing the underlying issue results in the code returning immediately upon the next wiper use.
• Forgetting to clear the code from the correct module (BCM/TIPM), as it does not show up in the main engine computer (PCM/ECM) scan.
• Assuming a battery disconnect fixed the problem. If the fault is intermittent, it seems fixed but returns later.

Will This Fail Emissions / State Inspection?

No — by itself this code doesn't fail OBD inspection (but it can keep readiness monitors from setting, which causes a separate fail).

• California: This code will not cause a failure of the OBD-II emissions (smog) test. However, inoperative windshield wipers cause a failure of the separate state-mandated vehicle safety inspection.
• New York: New York requires an annual safety inspection that explicitly checks for functional windshield wipers and blades. A vehicle with code B2305 and non-functional wipers automatically fails this inspection.
• Texas: As of 2025, most personal vehicles are exempt from the annual safety inspection, but commercial vehicles are not. Non-working wipers remain an equipment violation and cause failure for vehicles subject to inspection.

Most Commonly Affected Vehicles

• Dodge / Ram 1500, 2500, 3500 (2006-2016) — Extremely common. 2006-2008 models use a Front Control Module (FCM), while later models use the TIPM. The wiper motor's internal park switch is a frequent failure point.
• Jeep Wrangler (JK) (2007-2018) — The TIPM in these models is a frequent source of electrical issues, including B2305. A simple battery disconnect temporarily clears the fault, pointing to a TIPM logic issue.
• Jeep Grand Cherokee (2005-2019) — Prone to both wiper motor and control module failures. On newer models, a failed Body Control Module (BCM) causes the fault, with repairs costing around $800.
• Chrysler 300, Town & Country (2005-2010) — The 300 shares its LX platform with the Dodge Charger/Magnum, making wiper motor and linkage failures common across all three. Always inspect the linkage when replacing the motor.
• Dodge Durango, Dakota, Grand Caravan (2006-2011) — These models use a Front Control Module or TIPM that fails and triggers this code. The issue is common after wipers are strained by ice or snow.
• Jeep Liberty (2008-2012) — The 2012 Liberty is noted for having TIPM failures that manifest as a B2304 or B2305 code, even after the wiper motor is replaced.
• Hyundai / Kia Sonata, Santa Fe, Optima, Sorento (2006-2015) — The issue is almost always the internal park switch in the wiper motor, with control module failure being much less common than on Stellantis products.
• GMC / Chevrolet Terrain, Acadia, Equinox (2010-2017) — The Body Control Module (BCM) controls the wipers. A failure of the internal park switch triggers this fault. On some GM code lists, B2305 refers to an unrelated component, so a manufacturer-specific scan is crucial.

Manufacturer-Specific Notes

• Dodge / Chrysler / Jeep / Ram (Stellantis): This code is overwhelmingly found on these brands. The issue is frequently tied to the Totally Integrated Power Module (TIPM). A temporary fix of disconnecting the battery sometimes works, pointing to a logic lock-up in the TIPM.
• Ford: While B2305 is not a common native code on Ford vehicles, water intrusion into the Battery Junction Box (BJB) on F-Series trucks causes bizarre electrical issues that mimic a B2305 fault.
• General Motors (GM): Be cautious with generic code readers. On some GM platforms, the B2305 code definition is for a completely different component, such as a rear head restraint switch. Always use a manufacturer-specific scan tool.
• Hyundai / Kia: Unlike Stellantis vehicles where the control module is a common suspect, on Hyundai and Kia models, the cause is almost exclusively a failure of the park switch inside the wiper motor assembly.

Real Owner Stories

2007 Dodge Ram 1500 with inoperative wipers

A customer's truck had wipers that stopped working. The technician confirmed the B2305 code and observed the 'Wiper Park Switch Sense' live data read 'False'.

What they tried:

1. The technician disconnected the wiper motor and jumped the park switch sense wire in the harness to ground.
2. On the scan tool, the live data PID changed from 'False' to 'True', proving the wiring and the TIPM were good.

Outcome: The test confirmed the fault was inside the wiper motor. Replacing the faulty wiper motor resolved the B2305 code and restored wiper function.

Lesson: Even if you suspect a major component like the TIPM, performing a simple circuit test definitively isolates the fault to the motor, preventing unnecessary parts replacement.

2009 Jeep Wrangler JK with sudden check engine light

An owner turned on the wipers to clear frost, and the check engine light immediately came on with code B2305. The code returned instantly after being cleared.

What they tried:

1. The owner disconnected the vehicle's battery for ten minutes to perform a hard reset.

Outcome: Disconnecting the battery temporarily fixed the problem, and the wipers began working correctly again. This suggests a logic lock-up within the TIPM rather than a hard-part failure.

Lesson: For Jeep/Dodge/Chrysler vehicles, a simple battery disconnect is a worthwhile first step. If it temporarily solves the problem, it strongly points toward a TIPM issue.

2014 Dodge Grand Caravan with wipers that won't turn on

The vehicle's wipers completely stopped working. Diagnosis determined that the 'wiper on/off' relay, soldered directly onto the TIPM's internal circuit board, had failed.

What they tried:

1. Instead of replacing the entire TIPM assembly, the technician desoldered the faulty relay from the circuit board and soldered in a new one.

Outcome: The board-level repair was successful, and the wipers began functioning normally, saving hundreds of dollars compared to a full TIPM replacement.

Lesson: For those with advanced soldering skills, repairing the TIPM board itself is a high-risk but highly cost-effective alternative to replacing the entire expensive module.

Misdiagnosis: Wipers won't turn off on a Jeep JK

A Jeep Wrangler's wipers ran continuously and would not shut off, even with the key removed. A shop diagnosed a bad wiper motor and replaced it, but the problem persisted.

What they tried:

1. The shop finally tested the control module outputs and realized the TIPM was constantly sending power to the motor.

Outcome: The actual cause was a failed TIPM. Replacing the TIPM resolved the issue, but the owner paid for an incorrect repair first.

Lesson: Symptoms like wipers not shutting off are classic signs of a TIPM failure. Replacing the motor without testing the park switch circuit leads to costly misdiagnosis.

How to Prevent This Code From Triggering

• Lift wipers or use a windshield cover before snow/ice. (Before any expected winter storm.) — Prevents the wiper blades from freezing to the glass. Turning on frozen wipers puts extreme mechanical and electrical stress on the motor and linkage, a primary cause of park switch failure.
• Regularly clean debris from the windshield cowl area. (Seasonally, especially in the fall.) — Leaves and dirt clog the cowl drains at the base of the windshield. This causes water to pool, submerging the wiper linkage, promoting corrosion, and leaking into the vehicle electronics.
• Lubricate wiper linkage pivot points. (Every 1-2 years, or if you notice chattering.) — Applying spray silicone or white lithium grease to the pivot points prevents corrosion and binding. This reduces strain on the wiper motor, extending its life.
• Always use the defroster before using wipers on an icy windshield. (Every time the windshield is frosted over.) — Using wipers as an ice scraper quickly damages the rubber blades and overloads the motor, causing internal components to fail. Letting the defroster melt the ice first eliminates this strain.
• Use winter-grade washer fluid. (During all cold-weather months.) — Washer fluid with de-icing properties helps clear light ice and prevents refreezing, reducing the load on the motor.

Frequently Asked Questions

Why did my wipers stop in the middle of my windshield?

This is the classic symptom of a B2305 code. The wiper motor loses its 'park' position reference. When you turn the switch off, the motor cuts power immediately instead of completing its cycle to the bottom of the windshield.

How can I test if it's the wiper motor or the computer (TIPM/BCM) before buying parts?

Unplug the wiper motor and use a jumper wire to connect the park switch sense pin in the harness directly to a chassis ground. If your scan tool's live data changes from 'False' to 'True', the wiring and computer are good. This proves the fault is isolated inside the wiper motor.

My wipers failed right after a heavy snow/frost. What happened?

The extra weight and resistance from heavy snow or ice puts extreme strain on the wiper motor and linkage. If the internal park switch was already wearing out, this high load causes it to fail completely. This immediately triggers the B2305 code.

What is 'binding wiper linkage' and how can it cause code B2305?

The wiper linkage connects the motor to the wiper arms, and its pivot points frequently corrode and seize. This binding forces the motor to work harder, eventually breaking its internal park switch. You must replace or lubricate the linkage, or the new motor will quickly fail again.

A mechanic quoted me over $1,000 to fix this. Why so expensive?

If the diagnosis points to a failed Totally Integrated Power Module (TIPM) or Body Control Module (BCM), the repair is costly. The module itself costs $400-$1500+, and it requires VIN-specific programming which adds significant labor charges.

Can I just reset the TIPM to fix the B2305 code?

Disconnecting the vehicle's battery for ten minutes sometimes resets the TIPM's logic and temporarily restores wiper function. However, if the code and symptoms return quickly, you have a permanent hardware fault in the wiper motor or the TIPM itself.

My scanner shows B2304 and B2305 at different times. What does that mean?

This points to a highly erratic component or a failing control module. If you replace the wiper motor and the code flips from Circuit Low (B2304) to Circuit High (B2305), the TIPM is failing to interpret the park signal correctly.

What does 'Wiper Park Switch Sense: False' mean on my scan tool?

This is the live data representation of the B2305 fault. The control module reports that it does not see the grounded signal it expects from the park switch. When the wipers are parked, this data PID must read 'True'.

Can I fix code B2305 myself?

Replacing the wiper motor or linkage is a manageable job for a patient DIYer with basic hand tools. However, if the problem involves complex wiring repairs or replacing the main computer (TIPM/BCM), you need a professional with advanced diagnostic equipment.

Key Takeaways

• Code B2305 indicates a 'Circuit High' fault in the windshield wiper park switch, meaning the computer receives a constant high voltage instead of a ground signal.
• Replacing the windshield wiper motor resolves this code in over 80% of cases, as the park switch is permanently sealed inside the motor assembly.
• Always test the wiper linkage for binding before installing a new motor; a seized $100 linkage will quickly burn out a brand-new replacement motor.
• On 2006-2018 Dodge, Jeep, and Chrysler vehicles, a failing Totally Integrated Power Module (TIPM) frequently triggers this code and requires a $500+ replacement.
• Driving with a B2305 code is highly dangerous in precipitation and guarantees a failure during mandatory state safety inspections.