P0657
Actuator Supply Voltage Circuit open
Generic code
Computer Output Circuit
High severity
Hard repair
Free on OBD DashX
Want real-world data on P0657?
See which problems come with P0657, how often it shows up in other vehicles, and how to fix it — step by step.
- Real-world fix data
- How often it happens
- Step-by-step repairs
What P0657 means
- 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
Free on OBD DashX
P0657 on OBD DashX
Real-world causes, how often this code shows up, and the fix — step by step.
Open P0657 No sign-up needed · available in 10 languagesScan your own car
Read and clear fault codes, live data and service resets with the CaRPM app.