P0606
PCM Processor Fault
2014-2021 BMW i3 Range Extender
Critical SeverityPowertrainGeneric (SAE)
Description
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.
Related Codes
Other Powertrain Codes
- P0070Ambient Air Temperature Sensor Circuit
- P0071Ambient Air Temperature Sensor Range/Performance
- P0072Ambient Air Temperature Sensor Circuit Low
- P0073Ambient Air Temperature Sensor Circuit High
- P0115Engine Coolant Temperature (ECT) Sensor 1 Circuit
- P0116ECT Sensor 1 Circuit Range/Performance
- P0117ECT Sensor 1 Circuit Low Input
- P0118ECT Sensor 1 Circuit High Input
- P0119ECT Sensor 1 Circuit Intermittent
- P0125Insufficient Coolant Temperature for Closed Loop Fuel Control
P0606 on Other Vehicles
Common Questions
What does code P0606 mean on a 2014-2021 BMW i3?
P0606 stands for "PCM Processor Fault". The PCM has detected an internal processor error.
What are the symptoms of P0606 on a BMW i3?
Common symptoms of P0606 include: Check Engine Light, Erratic operation, Possible no-start, Multiple fault codes.
What causes P0606 on a 2014-2021 BMW i3?
Common causes of P0606 include: PCM internal failure, Power supply issue to PCM, Severe voltage spike, PCM overheating.