The P0658: Actuator Supply Voltage ‘A’ Circuit Low code indicates that the supply voltage in the ‘A’ circuit is lower than expected. This circuit powers various actuators, and low voltage can prevent the actuators from functioning properly. Causes include a low voltage issue in the circuit, a faulty actuator, or wiring problems.
P0658 – Quick Overview
| Code | Information |
|---|---|
| Meaning | P0658: Actuator Supply Voltage ‘A’ Circuit Low |
| Is it serious? | Yes, as it can affect systems dependent on actuator control, leading to performance issues. |
| Possible causes | – Low voltage in actuator supply voltage ‘A’ circuit – Faulty actuator – Wiring issue |
| How to diagnose? | – Test actuator supply voltage ‘A’ circuit for voltage – Inspect wiring and connectors – Replace actuator if necessary |
P0658 Meaning
The P0658 code indicates that the actuator supply voltage ‘A’ circuit is receiving lower-than-expected voltage. This may impact the performance of actuators that rely on this circuit, causing issues with systems like throttle control, transmission, or other engine components.
Step-by-step diagnostic guide
| Action | Description | Tools Needed |
|---|---|---|
| Check for Other Codes | Use an OBD-II scanner to check for additional codes related to the actuator system or electrical voltage issues. These may help diagnose the problem more effectively. | OBD-II Scanner |
| Test Actuator Supply Voltage ‘A’ Circuit for Voltage | Use a multimeter to measure the voltage in the actuator supply voltage ‘A’ circuit. Compare the voltage to the manufacturer’s specifications to ensure it is within range. | Multimeter |
| Inspect Wiring and Connectors | Inspect the wiring and connectors for signs of damage, corrosion, or loose connections that could lead to a voltage drop in the circuit. | Flashlight, Multimeter |
| Test the Actuator | Test the actuator powered by the supply voltage ‘A’ circuit to ensure it is receiving the correct voltage and is operating as expected. | Diagnostic Tool, Multimeter |
| Replace the Actuator if Necessary | If the actuator is faulty and not functioning correctly, replace it to restore proper system performance. | Replacement Actuator, Tools |
| Clear the Code and Test | After completing repairs, clear the code using an OBD-II scanner and test the vehicle to ensure the actuator supply voltage circuit is functioning correctly. | OBD-II Scanner, Vehicle Manual |
OBD-II scanner Buyer’s Guide
- Scanner features explained
- Different types of scanners
- Scanners for coding/odometer/ECU/checks
- Best picks + discount codes
I test OBD-II scanners and make DIY Engine diagnostics guides to help you solve your car problems without having to depend on the mechanic. A lot of them will try to scam you or are just no help at all. About Juraj Lukacko