EV Diagnostics
Source-backed diagnostic reference

P1608 EV diagnostic code

ECM Internal Circuit Failure B

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: ECM Internal Circuit Failure B Source
  • BMW: Serial Communicating Link Control Module Source
  • BUICK: Serial Communication Problem With Device 8 Source
  • CADILLAC: Serial Communication Problem With Device 8 Source
  • CHEVY: Serial Communication Problem With Device 8 Source
  • GM: Serial Communication Problem With Device 8 Source
  • GMC: Serial Communication Problem With Device 8 Source
  • HONDA: ECM Internal Circuit Failure B Source
  • INFINITI: ECM Internal Circuit Failure B Source
  • JAGUAR: Watchdog Malfunction Source
  • KIA: PCM Malfunction Source
  • MAZDA: Powertrain Control Module ECM CPU DTC Test Fault Source
  • OLDSMOBILE: Serial Communication Problem With Device 8 Source
  • OTHER: Internal ECM Malfunction Source
  • SATURN: Serial Communication Problem With Device 8 Source
  • VOLKSWAGEN: Steering Angle Signal Error Message From Steering Angle Sensor Source

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