P0657
Actuator Supply Voltage A Circuit/Open
P0657 is an OBD-II diagnostic trouble code meaning: Actuator Supply Voltage A Circuit/Open. Common causes: break in the power supply wire of circuit a of the actuators, blown actuator power supply fuse. Estimated repair cost: $1–556.
Symptoms
- Check Engine light comes on
- Multiple actuator fault codes
- Engine emergency mode
- Inoperative solenoids or relays
- Unstable operation of systems controlled by circuit actuators A
Causes
- Break in the power supply wire of circuit A of the actuators
- Blown actuator power supply fuse
- Wiring harness damage
- Malfunction of the actuator power relay
- Malfunction of the internal output stage of the ECU (rare)
How to Fix
- Check the actuator power supply fuses
- Check the actuator power relay
- Measure the voltage at the output of circuit A with the ignition on.
- Inspect the wiring harness for breaks or damage
- Repair power supply or replace relay/fuse
- If necessary, diagnostics of the ECU output stage
Related codes
Error P0657 by Vehicle Brand
FAQ
What does the P0657 code mean?
P0657 is an OBD-II diagnostic trouble code that indicates: Actuator Supply Voltage A Circuit/Open
What causes a P0657 error code?
The most common causes of P0657 include: Break in the power supply wire of circuit A of the actuators; Blown actuator power supply fuse; Wiring harness damage; Malfunction of the actuator power relay.
How do I fix a P0657 diagnostic trouble code?
To fix P0657: Check the actuator power supply fuses. Check the actuator power relay. Measure the voltage at the output of circuit A with the ignition on.. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0657?
Yes, but get it checked soon
How much does it cost to fix P0657?
The estimated repair cost for P0657 is $1–556. Actual cost depends on your vehicle, location, and labor rates.
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