EV Diagnostics
Source-backed diagnostic reference

P1547 EV diagnostic code

A/C System Performance Degraded

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

  • BUICK: A/C System Performance Degraded Source
  • CADILLAC: A/C System Performance Degraded Source
  • CHEVY: A/C System Performance Degraded Source
  • CHRYSLER: A/C System Performance Degraded Source
  • GM: A/C System Performance Degraded Source
  • GMC: A/C System Performance Degraded Source
  • OLDSMOBILE: A/C System Performance Degraded Source
  • SATURN: A/C System Performance Degraded Source
  • VOLKSWAGEN: Boost Pressure Control Valve Short To Ground Source

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