U0301

Software Incompatibility With ECM/PCM

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

~$167 (est.)

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

U0300 U0302 U0303