P257A

Vacuum Reservoir Control Circuit/Open

DTC P257A, sometimes indicated as P257A00 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 vacuum reservoir control circuit/open.

  • P257A: Vacuum Reservoir Control Circuit/Open
  • P257A: Vacuum reservoir control – open circuit
  • P257A 00: Vacuum reservoir control - open circuit

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