P0600
HighP0600 — Internal Control Module or Communication Error in the DME Engine Control Unit
Description
What the Code Means
Code P0600 points to an internal fault or communication error in the engine control unit (DME). On N55 engines this can come from software problems, low vehicle electrical system voltage, or a hardware failure in the DME. Fixing it may require reprogramming or replacing the DME.
Symptoms
Symptoms
- Check Engine light is on
- Engine may fail to start
- Rough or unstable engine operation
- Limp mode
Causes and fixes
Diagnosis and Repair
Step 1
Check battery voltage and the charging system. Low voltage can trigger communication errors.
Step 2
Update the DME software with ISTA.
Step 3
If the fault persists, replace the DME and code it to the car.
Possible secondary damage
Secondary Problems
Ignoring the fault can degrade drivability and make it harder to diagnose other faults.