P0657

2017-10-10

Description:

  • The P0657 fault code signals a problem with the A circuit of the actuator supply voltage. This can cause various issues with the vehicle's performance.

Possible Symptoms:

  • Illuminated check engine light

  • Engine may not start or may stall

  • Reduced engine power or acceleration

  • Rough or erratic engine performance

Possible Causes:

  • A faulty actuator

  • Damaged wiring or connections in the circuit

  • A loose or corroded electrical connection

  • A failed engine control module (ECM) or powertrain control module (PCM)

Related Parts:

  • Engine Control Module (ECM): ECM is the part of the car computer that controls the engine system and performance. Problems lead to poor fuel economy, engine stalling & unwanted engine vibrations

Possible Solutions:

  • Replace the actuator

  • Check and repair any damaged wiring or connections

  • Tighten or clean any loose or corroded electrical connections

  • Replace the engine or powertrain control module (ECM/PCM) if necessary

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