P0606
PCM Processor Fault
2000-2002 Rolls-Royce Corniche 6.75L V8
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
- P0001Fuel Volume Regulator Control Circuit/Open
- P0002Fuel Volume Regulator Control Circuit Range/Performance
- P0003Fuel Volume Regulator Control Circuit Low
- P0004Fuel Volume Regulator Control Circuit High
- P0010Intake Camshaft Position Actuator Circuit/Open Bank 1
- P0011Intake Camshaft Position Timing Over-Advanced Bank 1
- P0012Intake Camshaft Position Timing Over-Retarded Bank 1
- P0013Exhaust Camshaft Position Actuator Circuit/Open Bank 1
- P0014Exhaust Camshaft Position Timing Over-Advanced Bank 1
- P0015Exhaust Camshaft Position Timing Over-Retarded Bank 1
P0606 on Other Vehicles
Rolls-Royce Cullinan
2019-2024 6.75L V12 Twin Turbo
Rolls-Royce Dawn
2016-2024 6.6L V12 Twin Turbo
Rolls-Royce Ghost
2010-2024 6.6L V12 Twin Turbo
Rolls-Royce Phantom VII
2003-2017 6.75L V12
Rolls-Royce Phantom VIII
2018-2024 6.75L V12 Twin Turbo
Rolls-Royce Silver Seraph
1998-2002 5.4L V12
Rolls-Royce Silver Spirit
1990-1998 6.75L V8
Rolls-Royce Silver Spur
1990-1998 6.75L V8
Common Questions
What does code P0606 mean on a 2000-2002 Rolls-Royce Corniche?
P0606 stands for "PCM Processor Fault". The PCM has detected an internal processor error.
What are the symptoms of P0606 on a Rolls-Royce Corniche?
Common symptoms of P0606 include: Check Engine Light, Erratic operation, Possible no-start, Multiple fault codes.
What causes P0606 on a 2000-2002 Rolls-Royce Corniche?
Common causes of P0606 include: PCM internal failure, Power supply issue to PCM, Severe voltage spike, PCM overheating.