EV Diagnostics
Source-backed diagnostic reference

P1668 EV diagnostic code

PCM IDM Communications Error

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

  • FORD: PCM IDM Communications Error Source
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  • OTHER: PCM - IDM Communications Error Source

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