KlaroP0620
MODERATEGenerator Control Circuit Malfunction
What this code means
Generator Control Circuit Malfunction. Faults internal to the engine control unit or to its output circuits. Before suspecting the unit itself, which seldom fails, check grounds, connectors and battery voltage.
How to read this code
- PPowertrain
- 0standardised code
- 6Control unit and output circuits
- 20P0620
The letter P names the system: Powertrain. The digit 0 that follows marks a standardised code, shared by all manufacturers code. The next digit, 6, locates the fault: control unit and output circuits.
What to do
Have it checked this week. The car remains usable, but the fault will not clear itself and will fail the roadworthiness test.
Clearing a code switches the light off but repairs nothing: if the fault remains, the code comes back.