P1657
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Manufacturer Specific Definitions for P1657
| Make | Fault Location |
|---|---|
| Audi | AC signal - short to positive |
| Buick | Skip Shift 1 To 4 Upshift System Control Circuit |
| Cadillac | Skip Shift 1 To 4 Upshift System Control Circuit |
| Chevrolet | Skip shift solenoid -circuit malfunction |
| Ford | Skip Shift 1 To 4 Upshift System Control Circuit |
| Gm | Skip Shift 1 To 4 Upshift System Control Circuit |
| Hyundai | Unused Power Stage C |
| Mazda | CAN data bus – malfunction |
| Pontiac | Skip shift solenoid -circuit malfunction |
| Saab | AIC relay – short to positive |
| Volvo | Electronic throttle system (ETS), MIL request OFF – signal low (MIL ON) |
| Volkswagen | AC signal - short to positive |
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