OBD-II · Moteur et transmission (P)
P0620
Generator control circuit
Signification
The ECU detects a fault in the circuit it uses to control the alternator's charging voltage.
Symptômes
- battery warning light
- start-stop stops working
- slow cranking or no start
- dim lights or electrical glitches
- engine warning light
Causes probables, de la plus fréquente à la moins fréquente
| No. | Cause |
|---|---|
| 01 | alternator connector or wiring fault |
| 02 | faulty alternator regulator |
| 03 | LIN communication fault with the alternator |
| 04 | ECU driver fault |
Points à vérifier, étape par étape
- 01Inspect the alternator connector and control wire
- 02Check charging voltage at idle and 2,000 rpm
- 03Check for communication codes involving the alternator
- 04Replace the regulator or alternator if the wiring is good