EV Diagnostics
Source-backed diagnostic reference

P1203 EV diagnostic code

Cylinder 3 Misfire

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

  • ACURA: Cylinder 3 Misfire Source
  • BUICK: (Alternative Fuel) Gas Mass Sensor Circuit High Frequency Source
  • CADILLAC: (Alternative Fuel) Gas Mass Sensor Circuit High Frequency Source
  • CHEVY: (Alternative Fuel) Gas Mass Sensor Circuit High Frequency Source
  • CHRYSLER: (Alternative Fuel) Gas Mass Sensor Circuit High Frequency Source
  • GM: Alternative Fuel Gas Mass Sensor Circuit High Frequency Source
  • GMC: Alternative Fuel Gas Mass Sensor Circuit High Frequency Source
  • HONDA: Cylinder 3 Misfire Source
  • INFINITI: Cylinder 3 Misfire Source
  • JAGUAR: Cylinder 3 Injector Circuit Open/Shorted Source
  • OLDSMOBILE: Alternative Fuel Gas Mass Sensor Circuit High Frequency Source
  • OTHER: Injector Circuit Open / Shorted - Cylinder #3 Source
  • SATURN: Alternative Fuel Gas Mass Sensor Circuit High Frequency Source
  • VOLKSWAGEN: Cylinder 3 Fuel Injector Circuit Electrical Malfunction Source

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