P0700 on 2013-2016 Dodge Dart 1.4L: Transmission Control Malfunction Causes and Fixes

What's Unique About the 2013-2016 Dodge Dart

The 2013-2016 Dodge Dart with the 1.4L Turbo engine uses a Fiat-sourced C635 Dual Dry-Clutch Transmission (DDCT), which is essentially an automated manual. This transmission is known for specific issues that trigger a P0700 code. Unlike traditional automatics, many problems are linked to the external Transmission Control Module (TCM), its wiring, and the electro-hydraulic clutch actuator assembly (sometimes called the 'Smart Drive Unit'). A recall was even issued for the TCM mounting bracket on 2013-2015 models (NHTSA 15V-508), as its poor design could lead to vibration damage or water intrusion, causing the TCM to fail and the transmission to shift to neutral unexpectedly.

Symptoms You May Notice

• Check Engine Light is on
• "Service Transmission" message on the instrument cluster
• Flashing gear indicator light on the dashboard
• Harsh, jerky, or delayed shifting
• Vehicle gets stuck in one gear ('limp mode')
• Inability to shift into Drive or Reverse, with a "Gear Not Available" message
• Vehicle stalls when coming to a stop or shifting
• Loud mechanical grinding or clunking noises from the transmission area

Most Likely Causes

1. Faulty Transmission Control Module (TCM) 🔴 High Probability The TCM on these models is a known failure point. A recall (NHTSA ID 15V-508, FCA #R42) was issued for 2013-2015 models because the mounting bracket could cause vibration or water intrusion, leading to internal circuit board failure. Even on non-recalled vehicles, the TCM is a common failure item, often causing a U0101 code alongside P0700.
   How to confirm: Use an advanced scan tool to check for communication with the TCM. If the scanner cannot communicate with the TCM, or if you find codes like U0101 (Lost Communication with TCM), the TCM is likely bad. Visually inspect the TCM and its connector for corrosion or damage. Check for stable 12V+ power at the TCM connector.
   Typical fix: Replace the Transmission Control Module. The new module must be programmed to the vehicle's VIN by a dealer or a qualified shop with a wiTECH scan tool or equivalent software like AlfaOBD. This process is called a 'proxy alignment'.
   Est. part cost: $400-$800
2. Failing Clutch Actuators / Smart Drive Unit 🟡 Medium Probability The DDCT uses a complex electro-hydraulic unit (sometimes called the 'Smart Drive Unit' or hydraulic shift actuator) to control the clutches and shift forks. This unit is exposed to heat and vibration and can fail electronically or mechanically, causing shifting problems.
   How to confirm: Scan the TCM for specific codes related to clutch actuator position, hydraulic pressure, or performance, such as P1CC0 (Hydraulic Pump Stuck Off) or P2872 (Clutch Stuck Engaged). A mechanic can also perform functional tests on the actuators with a capable scan tool. In some cases, the internal range sensor melts, which is part of this assembly.
   Typical fix: Replace the faulty clutch actuator assembly (Smart Drive Unit). After replacement, a clutch re-learn or calibration procedure must be performed with a scan tool.
   Est. part cost: $300-$600 per actuator
3. Low or Weak Battery 🟡 Medium Probability The Dart's electronic modules, especially the TCM and the MultiAir system, are highly sensitive to low voltage. A weak or failing battery can cause a variety of seemingly unrelated electronic issues, including transmission faults and P0700, before causing a no-start condition.
   How to confirm: Test the battery voltage with a multimeter. A healthy battery should read approximately 12.6 volts with the engine off and 13.7-14.7 volts with the engine running. Perform a load test on the battery, as a battery can show good voltage but fail under load.
   Typical fix: Replace the battery if it fails testing. Ensure battery terminals and ground connections are clean and tight.
   Est. part cost: $150-$250
4. Damaged Wiring or Connectors ⚪ Low Probability The wiring harness to the TCM and actuators can become chafed, corroded, or damaged over time, leading to intermittent signals and fault codes. The main connector at the TCM is a common spot for moisture intrusion if the seal is compromised.
   How to confirm: Visually inspect the wiring harness leading to the transmission and TCM for any signs of damage, corrosion on the pins, or loose connections. Pay close attention to the large connector on the TCM itself. Use a multimeter to check for continuity and shorts in the suspected circuits based on the specific DTCs found.
   Typical fix: Repair the damaged section of the wiring harness or clean/replace the faulty connector.
   Est. part cost: $20-$150

Rare But Worth Checking

• Failed Transmission Range Sensor: On the DDCT, the range sensor is integrated into the electro-hydraulic actuator assembly. A failure of this sensor is not individually serviceable and requires replacement of the entire actuator unit. It can cause 'Gear Not Available' messages and trigger P0700.
• Internal Transmission Mechanical Failure: While less common than electronic issues, problems like a worn clutch pack, a failed shift fork, or bearing failure can also trigger faults in the TCM. This is usually accompanied by loud grinding noises and specific gear ratio error codes.
• Low or Burnt Transmission Fluid: The DDCT has two separate fluids: gear oil for the mechanical gears and a special hydraulic fluid for the actuator system. Low or contaminated fluid in either system can cause shifting problems and overheating, leading to fault codes.

Diagnosis Steps

1. The first and most critical step is to scan the Transmission Control Module (TCM) with an advanced scan tool capable of reading manufacturer-specific codes (e.g., a wiTECH tool or high-end Autel/Snap-on scanner). Do not rely on a basic code reader that only shows P0700.
2. Record all codes found in the TCM. These codes (e.g., U0101, P1CC0) will point to the specific circuit or component that has failed.
3. Check the battery and charging system. Ensure voltage is stable and within the correct range (12.6V+ engine off, 13.7-14.7V engine on). Perform a load test.
4. Check your VIN for open recalls, especially NHTSA 15V-508 (FCA #R42) for the TCM bracket and NHTSA 19V-293 (FCA #V34) for the shifter cable bushing. These repairs may be performed by a dealer for free.
5. Inspect the wiring harness and connectors going to the TCM and transmission for any visible damage, corrosion, or looseness. Pay special attention to the main TCM connector and the actuator connectors.
6. Based on the specific TCM codes, follow the diagnostic procedure for that component (e.g., testing a specific sensor, actuator, or solenoid circuit).
7. If no communication with the TCM is possible (U0101) and power/ground wires are confirmed to be good, the TCM itself is the primary suspect.

Parts You'll Likely Need

• Transmission Control Module (TCM) (OEM #68210293AA (latest revision, supersedes many previous part numbers like 68192976AB, 68033642AF, etc.)) — This is the most common failure point on the Dart DDCT that triggers a P0700, often due to a design flaw addressed by a recall.
  Trusted brands: Mopar
  OEM price range: $500-$800
  Aftermarket price range: $300-$500 (Remanufactured)
• Dual-Clutch Transmission Actuator (Hydraulic Shift Actuator)

Related Codes That Often Appear With This One

• U0101 — Indicates 'Lost Communication With TCM', strongly pointing to a failed TCM or a major wiring/power issue to the module. This is a very common partner code to P0700 in cases of complete TCM failure.
• P1CBF — This is a manufacturer-specific code often related to the clutch actuator hydraulic system on the DDCT, pointing towards a problem with the actuator unit.
• P1D6B — Indicates 'Clutch 1 Actuator Position Out of Range', pointing directly to a problem with the odd-gear (1, 3, 5, R) clutch actuator.
• P1CC0 — A manufacturer-specific code for 'Hydraulic Pump Stuck Off', pointing to a fault in the actuator/shifter assembly.
• P07xx — Any code in the P0700-P0799 range stored in the TCM indicates a specific transmission fault, such as with a sensor, solenoid, or gear ratio.

Technical Service Bulletins (TSBs) & Recalls

• S2321000006: While for a Challenger, this Dodge TSB confirms P0700 means 'Transmission Control System (MIL Request), Set.'
• NHTSA Recall 15V-508 / FCA R42: TCM mounting bracket may damage the module, causing a shift to neutral.
• NHTSA Recall 19V-293 / FCA V34: Shifter cable bushing may fail, allowing the cable to detach from the transmission.

Platform-Specific Known Issues

• Recall NHTSA 15V-508 (FCA #R42): Affects 2013-2015 models. The TCM mounting bracket can fail, causing excessive vibration and potential water intrusion into the module. This can lead to a loss of communication with the TCM, causing the transmission to shift into neutral without warning. The fix involves a new bracket and, if necessary, a new TCM.
• Recall NHTSA 19V-293 (FCA #V34): Affects 2013-2016 models. The shifter cable bushing at the transmission end can degrade and detach, preventing the driver from being able to properly shift gears. This can create a rollaway hazard if the vehicle is not actually in PARK when the shifter indicates it is.
• Various TSBs for Shift Quality: FCA has released multiple software updates for the TCM to address complaints of erratic or harsh shifting. If experiencing shift quality issues, it's worth checking with a dealer if any software flashes are available for your VIN.

Mechanic-Grade Diagnostic Values

• TCM Power Supply at Connector — expected: 12.0 - 12.6 V with ignition on. Failure: Low or no voltage points to a power supply issue (fuse, wiring) rather than a bad TCM.
• CAN C Bus (+) Circuit Voltage — expected: Below 5.0 volts. Failure: Voltage above 5.0 volts indicates a short to voltage in the CAN bus network wiring.
• Resistance of Sensor Ground Circuits (e.g., T191, T192) — expected: Below 5.0 Ohms. Failure: Resistance above 5.0 Ohms indicates an open or high resistance in the ground circuit for a sensor.
• Battery Voltage — expected: 9.0 to 16.0 volts (for TCM operation). Failure: Voltage outside this range can prevent the TCM from operating correctly and setting various codes.

Scan Tool Commands That Help

• wiTECH or AlfaOBD: Proxy Configuration Alignment — Required after replacing any module on the CAN bus system, including the TCM, to prevent a flashing odometer and ensure all modules communicate correctly.
• wiTECH or AlfaOBD: Quick Learn Procedure — Mandatory after replacing the TCM or transmission assembly to calibrate shift points and clutch engagement. May need to be performed multiple times after a test drive.
• wiTECH or AlfaOBD: Self-learnt functions reset — To reset the transmission's adaptive learning from a base setting, which can be attempted to resolve poor shift quality.
• wiTECH or AlfaOBD: Clutch Contact Points Learn — A specific calibration step required after a Quick Learn, which may require the transmission clutches to be at a certain temperature to complete successfully.

Wiring & Ground Locations

• Transmission Control Module (TCM) — Inside the passenger cabin, on the passenger side, behind the carpet at the front where the feet rest.. This is the primary control unit for the transmission. Knowing its location is critical for inspection, testing its connectors for power/ground/corrosion, and replacement.
• TCM Ground — A key ground point is located near the TCM itself.. A poor ground connection at this location can interrupt TCM operation and cause communication codes like U0101, leading to a P0700.
• TCM Power Fuse (F741) — Located in the underhood power distribution center (fuse box).. This 40A fuse is a primary power source for the TCM. If it's blown, the TCM will lose power, triggering P0700 and U0101. It's a simple check before condemning the module.

Real Owner Repair Stories

• Reddit r/dodgedart user (2013 Dodge Dart 1.4L DDCT) — 'Gear unavailable' error, blinking gear shifters, 'Service Transmission' message, car shifting to neutral while driving.
  ❌ Tried (didn't work) Owner was quoted $5k-$7k for a full transmission replacement by multiple shops.
  ✅ What actually fixed it Replacing the 'smart drive unit' (hydraulic actuator assembly) resolved all symptoms.
• Dodge-Dart.org forum user (2013 Dodge Dart 1.4L Turbo) — Intermittent no-start, loss of communication with TCM (U0101).
  ❌ Tried (didn't work) Clearing codes would work temporarily.
  ✅ What actually fixed it The user found that cleaning the fuse contacts in the fuse box and ensuring a tight fit resolved the intermittent communication loss with the TCM.
• YouTube channel 'MotorCity Mechanic' (2013 Dodge Dart with DDCT) — Intermittent no-start, U0101 'Lost Communication with TCM' code.
  ❌ Tried (didn't work) Diagnosing as an intermittent concern without a clear failure.
  ✅ What actually fixed it Replacing the Transmission Control Module (TCM) and performing the subsequent programming (data group reset, quick learn, clutch contact point learn) fixed the issue.

OEM Part Supersession History

• 68033642AB, 68192976AB, and others → 68210293AA — Revisions to improve reliability and address failures related to the circuit board and programming.
  Heads up: The latest part number, 68210293AA, is the recommended replacement for all 2013-2016 1.4L DDCT models and replaces numerous previous part numbers. Always use the latest revision.

Model Year Variations Within This Range

• 2013: The 2013 model year received significantly more owner complaints regarding the engine, transmission, and electrical systems compared to the 2014-2016 models. This suggests early production models were more prone to the TCM and DDCT issues that trigger P0700.
• 2013-2015: These model years were subject to FCA recall R42 (NHTSA 15V-508) to replace the TCM mounting bracket and the TCM itself due to a design flaw causing failure.

Diagnostic Flowchart

Other Known Issues on This Vehicle

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

• MultiAir 'Brick' Failure 🔴 High — Common issue, can occur at various mileages. Often presents after the vehicle sits for an extended period, causing oil to drain from the unit.
• Wastegate Actuator Adjustment/Failure 🟠 Medium — Particularly common on earlier models (2013-2014) which often left the factory with improper preload settings (0-1.5mm).
• Shifter Cable Bushing Failure 🔴 High — Widespread enough to trigger a major safety recall. (Ref: NHTSA #19V-293 (FCA #V34))
• Coolant Leaks 🟠 Medium — Commonly reported by owners.
• CV Axle Boot Leaks 🟡 Low — A known pattern, though less frequent than other issues. (Ref: A TSB (03-001-16) was issued for other Dodge vehicles around this time for a similar issue.)

Used vs. New Parts: Buying Guide for This Vehicle

When a used part is the smart pick: A used part is generally not recommended for the primary failures (TCM, Actuators) on this vehicle. The failure rate of these components is high, and a used part carries a significant risk of having the same defect or a short remaining lifespan. A used part only makes sense for large mechanical components like the transmission case itself if damaged, but not the electronics.

Donor-vehicle mileage cap: roughly under 50000 miles for the part to have meaningful remaining life.

What to inspect on the donor part:

• Verify the donor vehicle was not in a front-end collision.
• If possible, get history on the donor vehicle to see if the TCM or transmission was already replaced.
• Inspect connectors on the part for any signs of corrosion, bent pins, or harness damage.

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

• Transmission Control Module (TCM)
• Hydraulic Actuator Assembly (Smart Drive Unit)

Aftermarket brands forum-validated for this vehicle:

• Mopar (OEM)

Brands owners have reported issues with on this vehicle:

• Unbranded/white-box remanufactured TCMs from online marketplaces have mixed reviews. Some users report they work after programming, while others report they are dead on arrival or fail quickly. Dorman offers a remanufactured unit, but reviews indicate programming is mandatory and success is not guaranteed.

Real Owner Stories

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

Related OBD-II Codes

• U0101 — Lost Communication with TCM; frequently occurs alongside P0700 when the TCM fails due to the faulty mounting bracket or internal circuit board failure.
• P1CC0 — Hydraulic Pump Stuck Off; a specific TCM code that indicates a failure within the Smart Drive Unit/clutch actuator assembly.
• P2872 — Clutch Stuck Engaged; another specific code triggered by the electro-hydraulic actuator unit that causes the TCM to request a MIL (P0700).
• P0299 — Turbocharger Underboost; while an engine code, it is a common fault on the 1.4L MultiAir Turbo engine often discussed by owners troubleshooting overall vehicle performance issues.

Frequently Asked Questions