P0201 on 2011-2016 Chrysler Town & Country 3.6L: Injector Circuit Causes & Fixes

What's Unique About the 2011-2016 Chrysler Town & Country

On the 3.6L Pentastar V6, the fuel injectors are buried underneath the upper intake manifold, making what would be a simple repair on other engines a more involved, 2-3 hour job. Cylinder 1 is on the rear bank of cylinders (closest to the firewall), which can be tedious to access. It's crucial not to confuse this electrical fault with the well-known cylinder head issue on 2011-2013 Pentastars, which primarily affected the opposite cylinder bank (2, 4, 6), was covered by an extended warranty (X56), and has different symptoms and solutions.

Symptoms You May Notice

• Check Engine Light is on
• Rough, shaking, or unstable idle
• Engine misfires, felt as stuttering or hesitation during acceleration
• Noticeable loss of engine power
• Decreased fuel economy
• Possible smell of raw fuel from the engine bay or exhaust
• A flashing Check Engine Light, indicating a severe, catalyst-damaging misfire

Most Likely Causes

1. Failed Cylinder 1 Fuel Injector 🔴 High Probability The internal coil windings of the injector can fail over time from heat cycles, creating an open circuit. This is the most common failure mode for this code on the Pentastar engine. In some cases, the injector can fail internally and leak fuel into the electrical connector itself.
   How to confirm: Measure the injector's resistance with a multimeter; it should be between 12-16 Ohms (a common reading is ~12.3 Ohms). An 'O.L.' or infinite resistance reading confirms an open coil. The most definitive test is to swap the cylinder 1 injector with another cylinder (e.g., cylinder 3). If the code changes to P0203, the injector is faulty.
   Typical fix: Replace the faulty fuel injector. It is strongly recommended to replace all three injectors on the rear bank (cylinders 1, 3, 5) at the same time due to the high labor cost to access them. Always replace the upper and lower intake manifold gaskets during this job.
   Est. part cost: $60-$160
2. Damaged Wiring or Connector 🟡 Medium Probability The wiring harness can become brittle from heat cycles or be damaged by rodents. Wires can also chafe or melt if routed too close to hot exhaust components. The connector pins can also corrode or become contaminated with fuel if the injector leaks internally.
   How to confirm: Visually inspect the wiring harness leading to the cylinder 1 injector for any signs of damage, melting, or corrosion at the connector. Use a multimeter to check for continuity from the PCM connector to the injector connector. Check for 12V power on one wire and a pulsing ground from the PCM on the other using a noid light.
   Typical fix: Repair the broken/shorted wire or replace the damaged connector pigtail. In severe cases, a new engine wiring harness may be needed.
   Est. part cost: $10-$50 for pigtail repair
3. Faulty Powertrain Control Module (PCM) ⚪ Low Probability While rare, the internal driver circuit within the PCM that controls the injector can fail. This is less common than an injector or wiring fault.
   How to confirm: This is a last resort after confirming the injector and wiring are good. A 'noid light' test at the injector connector will show if the PCM is sending a pulse signal. If there is no pulse and the wiring has been tested and is intact, the PCM is the likely culprit.
   Typical fix: Replace and program the Powertrain Control Module. This typically requires a professional with specialized tools.
   Est. part cost: $250-$600

Diagnosis Steps

1. Confirm the presence of P0201 with an OBD-II scanner. Note any other codes, especially P0301.
2. Locate cylinder 1. On the Town & Country's transverse 3.6L engine, it is on the rear bank (near the firewall) on the passenger side.
3. To definitively test the injector, perform an injector swap. This requires removing the upper intake manifold. Swap the fuel injector from cylinder 1 with the injector from cylinder 3 (middle cylinder, same bank).
4. Reassemble the intake manifold using new gaskets, clear the codes, and run the engine.
5. If the trouble code changes to P0203 (Injector Circuit - Cylinder 3), the fuel injector itself is faulty and needs to be replaced.
6. If the P0201 code returns, the problem lies in the wiring harness or the PCM, not the injector.
7. Inspect the wiring harness for cylinder 1 for any visible damage, melting, or corrosion. Pay close attention to where the harness is secured or routes near hot engine parts.
8. If the wiring appears okay, use a 'noid light' to test for a pulse signal at the cylinder 1 injector connector. If the light flashes, the PCM and wiring are likely good, pointing back to an intermittent injector issue. If the light does not flash, the problem is in the wiring or the PCM driver.

Parts You'll Likely Need

• Fuel Injector (OEM #05184085AD) — This is the most common cause for a P0201 code on this engine, typically due to an internal open circuit in the injector's coil. This part number supersedes 5184085AC and RL184085AC.
  Trusted brands: Mopar, Bosch (OEM manufacturer), Standard Motor Products
  OEM price range: $150-$225
  Aftermarket price range: $60-$120
• Upper and Lower Intake Manifold Gasket Set (OEM #5184562AC (Upper), 5184331AC (Lower)) — These gaskets must be replaced anytime the upper intake manifold is removed to access the fuel injectors. Reusing old gaskets will cause vacuum leaks.
  Trusted brands: Fel-Pro (P/N: MS97204), Mahle, Mopar
  OEM price range: $30-$50
  Aftermarket price range: $15-$30

Related Codes That Often Appear With This One

• P0301 — This code means 'Cylinder 1 Misfire Detected'. Since P0201 indicates the injector circuit has failed, fuel isn't being delivered to cylinder 1, which directly causes it to misfire.
• P0300 — This code for 'Random/Multiple Cylinder Misfire' can sometimes appear if the single-cylinder misfire from P0201 is severe enough to disrupt the engine's rotational speed in a way the PCM interprets as multiple misfires.

Technical Service Bulletins (TSBs) & Recalls

• While no TSB is specific to P0201, TSB 09-002-14 Rev. B is relevant context for 2011-2013 models, as it addresses the left cylinder head defect that causes misfires on the opposite bank (cylinders 2, 4, 6).

Platform-Specific Known Issues

• Due to the labor involved in accessing the rear bank of injectors, it is highly recommended by mechanics and experienced owners to replace all three rear injectors (1, 3, 5) if one fails, especially on higher mileage vehicles.
• A known upgrade path is to use the 8-hole injectors (P/N: 05281427AA) from the 2016+ updated Pentastar engine, which are a direct fit and can improve fuel atomization for a potentially smoother idle.

Mechanic-Grade Diagnostic Values

• Fuel Injector Coil Resistance — expected: 12.0 - 16.0 Ohms. A common reading on a good injector is ~12.9 Ohms.. Failure: A reading of infinity (O.L.) indicates an open circuit. A reading significantly outside the range, such as 22 Ohms or higher, indicates a failing injector.
• Injector Pulse Width (at warm idle, in Park/Neutral) — expected: 2.0 - 4.0 milliseconds (ms). Failure: A value of 0 ms or a value significantly different from the other injectors on live scan tool data indicates a fault in that cylinder's injector circuit.
• Injector Connector Power (Key On, Engine Off) — expected: Battery Voltage (~12.6V) on the power supply wire (typically Brown/White).. Failure: Low or no voltage points to a problem with the power supply from the ASD relay/TIPM or a break in the power wire.
• Injector Control Wire Continuity — expected: Near 0 Ohms of resistance between the injector connector ground-pulse pin and the corresponding PCM pin.. Failure: High resistance or an open circuit (O.L.) indicates a break in the control wire between the PCM and the injector.

Scan Tool Commands That Help

• wiTECH or equivalent professional scan tool: Fuel Injector Kill / Disable — This bidirectional command allows a technician to individually disable each fuel injector while the engine is running. When cylinder 1 is disabled, if there is no change in the engine's idle quality, it confirms that cylinder was not contributing in the first place, further isolating the fault to that cylinder's fuel or ignition system. This helps differentiate from a mechanical issue.
• wiTECH or equivalent professional scan tool: Injector Actuator Test — With the engine off, this test commands the PCM to pulse the selected injector (e.g., Cylinder 1). The technician can then listen for an audible 'click' from the injector, providing a quick confirmation that the PCM driver, wiring, and injector solenoid are all capable of functioning. The absence of a click points directly to a fault in that circuit.

Wiring & Ground Locations

• Cylinder 1 Injector Control Wire — Pin 8 on the C2 connector of the Powertrain Control Module (PCM). The wire color is typically Brown/Yellow.. This is the specific wire that the PCM uses to send the ground pulse to fire the cylinder 1 injector. Testing for continuity between this pin and the injector connector is a definitive way to rule out a broken control wire.
• Injector Power Supply Wire — The power wire for all injectors is typically Brown/White. It receives power from the ASD (Auto Shutdown) relay, which is located in the Totally Integrated Power Module (TIPM) or underhood fuse box.. A break or short in this common power supply wire could cause P0201, but would likely cause codes for other injectors as well. Verifying ~12V at the injector connector confirms the power supply side of the circuit is intact.
• Connector C130 — This is a large, black, 16-pin inline connector located on the back of the front cylinder head (Bank 2).. This connector serves as a crucial junction for the engine wiring harness. It's much easier to access than the PCM connectors and provides an excellent 'divide and conquer' test point. You can check for continuity from this connector to the injector, and from this connector back to the PCM, to quickly isolate which section of the harness has a fault.
• Main Engine Ground — A primary ground strap runs from the engine block (often near the alternator or on the cylinder head) to the chassis frame rail or firewall.. While not a direct cause of a single injector code, a loose or corroded main engine ground can cause a host of bizarre electrical issues, including erratic sensor readings and improper PCM function, which could potentially manifest as injector circuit codes. Ensuring this ground is clean and tight is a fundamental step in any electrical diagnosis.

Real Owner Repair Stories

• YouTube Channel 'Foregone Trails' (Jeep Cherokee XJ (engine swapped with a Pentastar, but P0201 diagnostics are universal)) — P0201 misfire code.
  ❌ Tried (didn't work) Swapping the fuel injector to another cylinder did not move the code., Testing the wiring showed proper voltage and continuity.
  ✅ What actually fixed it The root cause was a previous short in the injector pigtail wiring that had damaged the injector driver circuit inside the Powertrain Control Module (PCM). The final fix was replacing the PCM and the damaged injector pigtail.
• Jeep Liberty KK Forum user (2008 Jeep Liberty KK (similar injector diagnostics)) — Rough running, Check Engine Light with P0201, smell of gas inside the electrical connector for the injector.
  ❌ Tried (didn't work) A resistance test showed 12 ohms, which is within the correct spec and could have led to a misdiagnosis.
  ✅ What actually fixed it Replacing the fuel injector. The smell of gas inside the electrical connector indicated an internal failure of the injector seal, allowing fuel to leak through its body into the connector, even though the coil's electrical resistance was still good.
• NHTSA ODI #10339808 — An owner reported experiencing gas smells and smoke; a diagnostic check indicated code P0201 for a #1 fuel injector open circuit. The owner noted the necessity of removing the top half of the intake manifold to address the repair.

OEM Part Supersession History

• 5184085AC → 05184085AD — Standard part revision and improvement by the manufacturer.
  Heads up: These parts are fully interchangeable. 05184085AD is the currently recommended service replacement for the original part.
• 05184085AD (4-hole injector) → 05281427AA (8-hole injector) — This is not a direct supersession but a popular and compatible upgrade. The 05281427AA injector is from the updated 2016+ Pentastar 'PUG' engine.
  Heads up: This is a direct-fit upgrade. The newer 8-hole design provides better fuel atomization, which can lead to a smoother idle and potentially minor fuel economy improvements. No tuning is required for this swap.

Diagnostic Flowchart

Other Known Issues on This Vehicle

Issues unrelated to this code that are worth knowing about as an owner of this generation:

• Cracked Oil Filter Housing / Cooler Assembly 🔴 High — Very common across all model years. The plastic housing can crack or warp from heat cycles, causing significant oil and/or coolant leaks into the engine valley. (Ref: TSB #09-008-15 and #09-003-25 address diagnosis, but no recall was issued.)
• Rocker Arm / Lifter Failure ('Pentastar Tick') 🟠 Medium — Common issue, particularly on earlier models but can occur at any mileage. Worn roller bearings on the rocker arms cause a distinct ticking noise, misfires, and can lead to camshaft damage if ignored.
• Left Cylinder Head Defect 🔴 High — Primarily affects 2011-2013 models. Premature wear of the valve seats on the left bank (cylinders 2, 4, 6) leads to misfires and loss of compression. (Ref: Chrysler issued an extended warranty (X56) for this specific issue. TSB 09-002-14 Rev. B applies.)
• Totally Integrated Power Module (TIPM) Failure 🔴 High — Common on 2011-2013 models. A faulty TIPM can cause a wide range of bizarre electrical issues, including no-start conditions, fuel pump failure, horn honking, and more. (Ref: Multiple recalls were issued, including V62, but problems persisted for many owners.)
• Cooling System Component Failure 🟠 Medium — Common across all years. The plastic thermostat housing is prone to cracking, and water pumps can fail, leading to overheating conditions.

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: For this repair, a used wiring harness pigtail or a complete engine harness from a low-mileage donor vehicle can be a cost-effective choice if the original is damaged beyond simple repair. A used Powertrain Control Module (PCM) can also be an option, but it MUST be from an identical vehicle (year, model, engine, transmission) and will require professional programming to the vehicle's VIN.

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

What to inspect on the donor part:

• For wiring: Inspect for any cuts, melted sections, or brittle insulation. Check that all connector locking tabs are intact and not broken.
• For PCM: Ensure the case is not physically damaged and the connectors are free of corrosion or bent pins. Verify the part number matches exactly.
• Avoid parts from vehicles with flood or fire damage.

OEM-only on this vehicle (don't cheap out):

• Fuel Injector: While some aftermarket brands are reputable, many forum users and mechanics strongly recommend using OEM Mopar or the OEM supplier (Bosch) for fuel injectors. Cheap, unbranded injectors are known to have inconsistent flow rates and high failure rates, leading to repeat repairs.

Aftermarket brands forum-validated for this vehicle:

• Bosch (often the OEM manufacturer)
• Standard Motor Products (SMP)
• Fel-Pro (for intake gaskets)
• Mahle (for intake gaskets)

Brands owners have reported issues with on this vehicle:

• Unbranded, no-name fuel injectors from online marketplaces are frequently cited as being problematic and should be avoided to prevent repeat labor.

Real Owner Stories

Aggregated from forums and TSBs cited above. Mileages and costs reflect what owners reported in those sources.

Related OBD-II Codes

• P0301 — Cylinder 1 Misfire Detected; this frequently accompanies P0201 when the injector circuit failure prevents proper combustion in that cylinder.
• P0203 — Injector Circuit - Cylinder 3; this code is used during the diagnostic 'injector swap' test to confirm if a fault moves from cylinder 1 to cylinder 3.
• P0205 — Injector Circuit - Cylinder 5; this is the third injector located on the same hard-to-access rear bank as cylinder 1.
• P0300 — Random or Multiple Cylinder Misfire; may be triggered if the injector failure causes unstable idle or if multiple injectors are failing due to heat cycles.

Frequently Asked Questions