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November 22nd 2025

P1688 / MOPAR

Internal Fuel Injection Pump Controller Failure

Notes:

November 22nd 2025

P1688 / JAGUAR

Metering Oil Pump Stepping Motor Circuit Malfunction

Notes:

November 22nd 2025

P1688 / GENERIC

Metering Oil Pump Stepping Motor Circuit Malfunction

Notes:

November 22nd 2025

P1688 / FIAT

Motorised throttle(2nd idle learn)

Notes:

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NOTE: Results from this database are the beginning of the diagnostic process, further investigation should be performed to confirm results before you begin repairs.