P1691 — Jeep — Fuel Injection Pump Controller Calibration Failure

P1691 (Jeep): Fuel Injection Pump Controller Calibration Failure — what it means, the affected system and what to check before replacing parts.

Meaning, symptoms, causes and checks

Fuel Injection Pump Controller Calibration Failure. Source catalogue definition; confirm applicability using vehicle service information.

Affected system: Powertrain