P2521

A/C Request "A" Circuit High

DTC P2521, sometimes indicated as P252100 is an OBD diagnostic trouble code indicating a manufacturer-specific fault with the vehicle powertrain (i.e. engine and gearbox). This code identifies an error with the engine idling stability causing a/c request "a" circuit high.

  • P2521: A/C Request "A" Circuit High
  • P2521: AC request A – circuit high
  • P2521 00: AC request A - circuit high

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