P0658

Actuator Supply Voltage A Circuit Low

Q: Is it safe to drive with P0658?

The car usually still runs, but a low actuator supply can knock out functions that depend on it and set more codes. Have it diagnosed rather than continuing indefinitely.

Q: Can I just clear P0658?

It returns while the supply reads low. The real fix is finding the short to ground or the faulty actuator overloading the circuit.

Actuator supply voltage Generic OBD-II Medium

What it means

P0658 means the "A" actuator supply voltage — the feed the ECM uses to power certain output devices (actuators/solenoids) — is reading too low. It's usually a wire shorted to ground or a faulty actuator overloading the circuit. The engine may still run, but any actuator on that supply can stop working, so it's worth tracing before it sets more codes.

Medium

Can I keep driving? Drivable, but low supply voltage can disable one or more actuators and hurt running; get it diagnosed before it triggers more faults.

Real-world scan data

Seen in

101

scans in the past year

Found in

<0.1%

of scans

<0.1%

of scans that found faults

Figures reflect only diagnostic scans recorded through our own apps and tools. Cars are typically scanned because a symptom or warning light prompted it, so these counts describe our scan records — not the incidence of faults in any model, and not the quality, reliability, or safety of any vehicle. No comparison between manufacturers or models is implied. All trademarks belong to their respective owners; no affiliation or endorsement is implied.

Common symptoms

What you'll notice

Check-engine light on
Multiple actuator-related codes set together
Rough running, hesitation, or reduced performance
Possible reduced-power/limp mode

Common causes

Most likely first

Actuator supply circuit 'A' shorted to groundLikely
A faulty actuator overloading and pulling the supply lowCommon
Damaged or chafed wiring in the supply circuitCommon
Loose or corroded connector terminalsLess often
Faulty engine control module (ECM), rareLess often

How to diagnose & fix

Work through it in order

Scan for companion actuator codes on the same supply — they help localize the fault.
Inspect the supply wiring for a short to ground or chafing.
Disconnect actuators on that supply one at a time to see if voltage recovers, isolating a shorted actuator.
Repair the wiring or replace the faulty actuator.
If the circuit is clean and the fault stays, test the ECM's actuator supply output. Clear and re-test.

FAQ

Quick answers

Is it safe to drive with P0658?+

The car usually still runs, but a low actuator supply can knock out functions that depend on it and set more codes. Have it diagnosed rather than continuing indefinitely.

Can I just clear P0658?+

It returns while the supply reads low. The real fix is finding the short to ground or the faulty actuator overloading the circuit.

Read & clear P0658 yourself

Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.

▶ Get it on Google Play

✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX