P257B

Vacuum Reservoir Control Circuit Low

DTC P257B, sometimes indicated as P257B00 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 low.

  • P257B: Vacuum Reservoir Control Circuit Low
  • P257B: Vacuum reservoir control – circuit low
  • P257B 00: Vacuum reservoir control - circuit low

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