Actuator Supply Voltage A Circuit Low
The P0658 code means the vehicle's onboard diagnostic system has detected: Actuator Supply Voltage A Circuit Low. This is a moderate severity code.
- Keep driving?
- Short distances only
- DIY difficulty
- moderate
- Estimated cost
- $50 - $500 (parts and labor)
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Common Symptoms
- Check Engine Light on
- Actuators receiving low voltage
- Reduced system performance
- Warning indicators on dashboard
Probable Causes (Ranked by Likelihood)
- Short to ground or high resistance in supply A Very High
- Wiring damage or corrosion in the circuit High
- Poor electrical connection at module or component Moderate
- ECM or control module internal failure Low
Step-by-Step Diagnostic Procedure
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Use a scan tool to read data related to Actuator Supply Voltage A
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Inspect all related wiring, connectors, and grounds for damage, corrosion, or loose connections
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Measure circuit voltage, resistance, and continuity to identify the fault type
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Check for technical service bulletins related to this code for your specific vehicle
Frequently Asked Questions
What does P0658 mean?
P0658 indicates a fault in the actuator supply voltage a circuit low. This is an electronic control system code that affects the ECM's ability to manage the associated component or system.
Is P0658 a serious code?
This is a moderate concern that should be diagnosed soon but may not prevent driving short distances.
Can a low battery cause ECM-related codes?
Yes. Low battery voltage can cause various ECM and module communication codes. Always verify the battery is fully charged and the charging system is working before diagnosing electronic control module codes.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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