U0100 on Dodge Charger
Lost Communication With ECM/PCM A
Methodology: Reviewed against the SAE J2012 generic DTC definition and NHTSA owner-complaint patterns, then scoped to Dodge Charger 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 U0100.
- 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 U0100 Means on Your Dodge Charger
U0100 is a diagnostic trouble code indicating: Lost Communication With ECM/PCM A. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.
Real Dodge Charger Owner Reports
Source: NHTSA Complaints Database
"The contact owns a 2006 Dodge Charger. The contact stated while idling at the traffic light, the vehicle stalled. The contact stated that the failure also occurred while driving at various speeds. The check engine warning light was illuminated."
"I was almost rear-ended by a semi when the vehicle stalled at a light while picking my son up from work. It seems to stall at stop signs or waiting at lights completely. It stalls while idling here and there sometimes."
"PCM shuts down briefly without warning at seemingly random times, although this seems to be more common when accelerating from stationary such as at a stoplight."
"Car keeps stalling randomly at stops. it will even stall while driving going up hills or on the highway. most times it will not completely stall (studder) and continue on. if it does stall completely, sometimes takes a lot of effort to try and restart the engine."
"Speedometer quit working, car jumps hard into reverse and drive, will not shift out of first gear, code u0100, u1120, u0121, u0103, replaced computer and had no change of condition, no transmission dipstick to check fluid, a must take to dealer item that is not sensible."
All reports filed by vehicle owners directly with the U.S. Department of Transportation.
📊 Complaint Trend by Model Year
Common Causes on Dodge Charger
Based on NHTSA complaint component analysis for this vehicle.
What To Do Next
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1
Check for recalls on YOUR VIN
Go to nhtsa.gov/recalls and enter your VIN. If your vehicle is covered, repairs are free.
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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.
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3
Compare repair quotes
Get 2–3 quotes. Dealer vs. independent shop prices often differ 30–50% for the same repair.