EV Diagnostics
Source-backed diagnostic reference

P1688 EV diagnostic code

Internal Fuel Injection Pump Controller Failure

Reference status: This page preserves source-backed code definitions for discovery. Manufacturer/model applicability, repair steps and safety conclusions are not treated as verified unless a manufacturer-specific verified report is available.

Reference definitions

  • CHRYSLER: Internal Fuel Injection Pump Controller Failure Source
  • DODGE: Internal Fuel Injection Pump Controller Failure Source
  • JEEP: Internal Fuel Injection Pump Controller Failure Source
  • MAZDA: Metering Oil Pump Stepping Motor Cont Circuit Source
  • OTHER: Metering Oil Pump Stepping Motor Circuit Malfunction Source
  • PLYMOUTH: Internal Fuel Injection Pump Controller Failure Source
  • PONTIAC: Internal Fuel Injection Pump Controller Failure Source

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