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U0101 on Dodge Dart

Lost Communication With TCM

NHTSA Reports

Severity

medium

Most Affected

2013, 2015

Crashes / Fires

0 / 0

Source: NHTSA Complaints Database · SAE J2012

Last reviewed: Aug 8, 2026 Last updated: Aug 8, 2026

Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Dodge Dart context without treating complaints as confirmed diagnoses.

Sources: SAE/OBD-II definitions, manufacturer service information, and public reliability reports (including NHTSA where applicable).

SAE J2012 Diagnostic Trouble Code Definitions — Generic diagnostic trouble code definition reference for U0101.
NHTSA recalls, complaints, and manufacturer communications — Used to check public owner complaint context, recall status, and safety-related manufacturer communications by VIN or vehicle.

Limits: Guidance is informational and may not match every model-year or revision. Confirm with the official manual and diagnostics before replacing parts. For safety-critical or electrical work, use a qualified technician.

What U0101 Means on Your Dodge Dart

U0101 is a diagnostic trouble code indicating: Lost Communication With TCM. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

2 DODGE DART owners have reported this issue to NHTSA across model years 2013-2015. Most reports come from the 2013, 2015 model years. The most commonly reported component is Power Train (50.0% of reports).

Real Dodge Dart Owner Reports

Source: NHTSA Complaints Database

"The powertrain control module was reprogrammed and the transmission control module was reprogrammed under warranty on august 29, 2013."

— 2013 Dodge Dart owner · POWER TRAIN · Filed 2018-08-25

"I am having an intermittent, no communication with TCM, Active stabiliy control light comes on, the vehicle feels like it pops into neutral jarring the vehicle and once this happens i have code U0101 in PCM,ABS, ESM, BCM,IPC,RFH along with a U11C2 code in the PCM."

— 2015 Dodge Dart owner · POWER TRAIN,ELECTRICAL SYSTEM · Filed 2025-04-24

All reports filed by vehicle owners directly with the U.S. Department of Transportation.

📊 Complaint Trend by Model Year

'13

'15

Common Causes on Dodge Dart

Based on NHTSA complaint component analysis for this vehicle.

POWER TRAIN 50%

POWER TRAIN,ELECTRICAL SYSTEM 50%

What To Do Next

1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
2
Get a proper diagnosis
A code alone doesn't tell you the exact failed part. A diagnostic at a shop ($50–$150) pinpoints the root cause before you spend money on parts.
3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.