Actuator Supply Voltage A Circuit High
The P0659 code means the vehicle's onboard diagnostic system has detected: Actuator Supply Voltage A Circuit High. 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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What Are the Symptoms of P0659?
- Check Engine Light on
- Actuators receiving high voltage
- Reduced system performance
- Warning indicators on dashboard
What Causes P0659? (Most Likely First)
- Short to power in actuator supply circuit 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
Can I Still Drive with P0659?
Short distances only. P0659 is rated moderate severity. Keep trips short and get it diagnosed soon rather than waiting for symptoms to worsen.
Frequently Asked Questions
What does P0659 mean?
P0659 indicates a fault in the actuator supply voltage a circuit high. This is an electronic control system code that affects the ECM's ability to manage the associated component or system.
Is P0659 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.
Mechanics Guide Step-by-step diagnosis
How Do You Diagnose P0659?
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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
Sources 1
This page is built from documented references. Verify against your own service info before repair work.
- SAE J2012Diagnostic Trouble Code Definitions (defines the generic OBD-II code ranges)
Which Vehicles Commonly Get P0659?
- 2008-2018 Ford F-150
- 2010-2020 Toyota Camry
- 2009-2019 Honda Accord
- 2011-2020 Chevrolet Silverado
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