Invalid Data Received from ECM/PCM
2011-2011 Mitsubishi Lancer 2.0L I4
The 2011 Mitsubishi Lancer is equipped with a 2.0L inline-4 engine. Below you'll find detailed u0401 diagnostic code information including labor time estimates, cost ranges, and technician notes specific to this engine configuration.
Description
The data received from the PCM is invalid or corrupted.
Symptoms
- Various warning lights
- Erratic system behavior
Common Causes
- PCM software issue
- CAN bus noise
- PCM failure
- Wiring interference
Diagnostic Steps
- Update PCM software
- Check for TSBs
- Test CAN bus signal quality
- Check for electromagnetic interference
Repair Notes
Reprogram PCM. Check CAN bus.
Related Codes
Other Network Codes
- U0001High Speed CAN Communication Bus
- U0002High Speed CAN Communication Bus Performance
- U0003High Speed CAN Communication Bus (+) Open
- U0004High Speed CAN Communication Bus (+) Low
- U0005High Speed CAN Communication Bus (+) High
- U0006High Speed CAN Communication Bus (-) Open
- U0007High Speed CAN Communication Bus (-) Low
- U0008High Speed CAN Communication Bus (-) High
- U0009High Speed CAN Communication Bus Shorted Together
- U0010Medium Speed CAN Communication Bus
U0401 on Other Vehicles
Mitsubishi 3000GT
1996-1996 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1997-1997 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1998-1998 3.0L V6 Twin Turbo
Mitsubishi 3000GT
1999-1999 3.0L V6 Twin Turbo
Mitsubishi Colt JP
2002-2002 1.3L I4 4A90
Mitsubishi Colt JP
2002-2002 1.5L I4 4A91
Mitsubishi Colt JP
2003-2003 1.3L I4 4A90
Mitsubishi Colt JP
2003-2003 1.5L I4 4A91
Common Questions
What does code U0401 mean on a 2011-2011 Mitsubishi Lancer?
U0401 stands for "Invalid Data Received from ECM/PCM". The data received from the PCM is invalid or corrupted.
What are the symptoms of U0401 on a Mitsubishi Lancer?
Common symptoms of U0401 include: Various warning lights, Erratic system behavior.
What causes U0401 on a 2011-2011 Mitsubishi Lancer?
Common causes of U0401 include: PCM software issue, CAN bus noise, PCM failure, Wiring interference.
Last updated: March 2026