P0606critical severityPowertrain
PCM Processor Fault
on 2021 Ford Mustang Mach-E Standard Range Dual Motor AWD · RWD
What this code means
The PCM has detected an internal processor error.
Symptoms
- Check Engine Light
- Erratic operation
- Possible no-start
- Multiple fault codes
Common causes
- PCM internal failure
- Power supply issue to PCM
- Severe voltage spike
- PCM overheating
Diagnostic steps
- Check PCM power and ground circuits
- Look for water or heat damage
- Check for voltage spikes
- Try PCM reprogramming
Repair notes
Usually requires PCM replacement. Check power and grounds first.
Other Powertrain codes on this vehicle
P0070
Ambient Air Temperature Sensor Circuit
P0071
Ambient Air Temperature Sensor Range/Performance
P0072
Ambient Air Temperature Sensor Circuit Low
P0073
Ambient Air Temperature Sensor Circuit High
P0115
Engine Coolant Temperature (ECT) Sensor 1 Circuit
P0116
ECT Sensor 1 Circuit Range/Performance
P0117
ECT Sensor 1 Circuit Low Input
P0118
ECT Sensor 1 Circuit High Input
P0119
ECT Sensor 1 Circuit Intermittent
P0125
Insufficient Coolant Temperature for Closed Loop Fuel Control