These 21 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 21 times.
| Code | Definition | Repair coverage |
|---|---|---|
| P0620 | Generator Control Circuit | 4 ranked fixes |
| P0621 | Generator Lamp/L Terminal Circuit | 4 ranked fixes |
| P0622 | Generator Field/F Terminal Circuit | 4 ranked fixes |
| P0623 | Generator Lamp Control Circuit | 4 ranked fixes |
| P0625 | Generator Field/F Terminal Circuit Low | 4 ranked fixes |
| P0626 | Generator Field/F Terminal Circuit High | 4 ranked fixes |
| P063A | Generator Voltage Sense Circuit A | 4 ranked fixes |
| P063B | Generator Voltage Sense Circuit A Range/Performance | 4 ranked fixes |
| P063C | Generator Voltage Sense Circuit A Low | 4 ranked fixes |
| P063D | Generator Voltage Sense Circuit A High | 4 ranked fixes |
| P065A | Generator System Performance | 4 ranked fixes |
| P065B | Generator A Control Circuit Range/Performance | 4 ranked fixes |
| P065C | Generator A Mechanical Performance | 4 ranked fixes |
| P2500 | Generator Lamp/L-Terminal Circuit Low | 4 ranked fixes |
| P2501 | Generator Lamp/L-Terminal Circuit High | 4 ranked fixes |
| P2CC1 | Generator Voltage Sense Circuit B | 4 ranked fixes |
| P2CC2 | Generator Voltage Sense Circuit B Range/Performance | 4 ranked fixes |
| P2CC3 | Generator Voltage Sense Circuit B Low | 4 ranked fixes |
| P2CC4 | Generator Voltage Sense Circuit B High | 4 ranked fixes |
| P2D57 | Generator B Control Circuit Range/Performance | 4 ranked fixes |
| P2D58 | Generator B Mechanical Performance | 4 ranked fixes |
This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:
est_parts_cost_min/max_usd)est_labor_hours)