U0301
Software Incompatibility With ECM/PCM
U0301 is an OBD-II diagnostic trouble code meaning: Software Incompatibility With ECM/PCM. Common causes: incompatible ecu software update, replacing the ecu with an incompatible version. Estimated repair cost: ~$167.
Symptoms
- Check Engine light comes on
- Reduced engine power
- Unstable engine operation
- Gear shifting problems (for automatic transmissions)
- Increased fuel consumption
Causes
- Incompatible ECU software update
- Replacing the ECU with an incompatible version
- Damage to ECU software
- Incompatible modules in the control system
- Problems with communication between modules
How to Fix
- Check ECU software version
- Update ECU software to a compatible version
- Check compatibility of all system modules
- Reset errors and calibrate the ECU
- If necessary, replace the ECU with a compatible version
Related codes
Error U0301 by Vehicle Brand
FAQ
What does the U0301 code mean?
U0301 is an OBD-II diagnostic trouble code that indicates: Software Incompatibility With ECM/PCM
What causes a U0301 error code?
The most common causes of U0301 include: Incompatible ECU software update; Replacing the ECU with an incompatible version; Damage to ECU software; Incompatible modules in the control system.
How do I fix a U0301 diagnostic trouble code?
To fix U0301: Check ECU software version. Update ECU software to a compatible version. Check compatibility of all system modules. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0301?
Yes, but get it checked soon
How much does it cost to fix U0301?
The estimated repair cost for U0301 is ~$167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat