P1A51
Drive Motor 1 Control Module Read Only Memory
Severity
🔴 HighCan you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)
Symptoms
- Check Engine light comes on
- Reduced engine power
- Switching to emergency mode
- Problems starting the engine
- Unstable operation of the hybrid system
Causes
- Damage to the motor controller software
- Control module power problems
- Short circuit in the controller circuit
- Mechanical damage to the module
- Corrosion of contacts or connectors
How to Fix
- Check fault codes and freeze frame data
- Test the control module power circuit
- Inspect connectors and wiring harness for damage
- Update or reflash the control module software
- If necessary, replace motor control module 1