A Camshaft Position Actuator Circuit Bank 1
The Engine Control Module (ECM) detected a malfunction in the electrical circuit for the Bank 1 intake (or 'A') camshaft position actuator solenoid. This code is set when the voltage or resistance in the actuator circuit falls outside the expected manufacturer parameters, indicating an open, short, or high resistance condition.
While the vehicle can usually still be driven, the engine may run poorly and fuel economy will suffer. It should be diagnosed and repaired soon to prevent potential stalling or long-term engine wear.
Common symptoms
- Illuminated Check Engine Light
- Rough or unstable engine idle
- Decreased engine power and performance
- Reduced fuel economy
- Engine stalling or hesitation during acceleration
Likely causes
- Faulty camshaft position actuator solenoid (internal open or short)
- Corroded, loose, or damaged wiring harness connectors at the solenoid
- Broken or chafed wiring in the actuator circuit
- Sludge buildup or dirty engine oil causing solenoid failure
- Faulty Engine Control Module (ECM) (rare)
What to check before replacing parts
Check the engine oil level and condition.
Look for: Low or excessively dirty oil can damage the VVT solenoid. Ensure the oil is full and clean before proceeding with electrical tests.
Visually inspect the wiring and connector at the Bank 1 intake camshaft actuator solenoid.
Look for: Look for broken wires, melted insulation, or corroded pins that would cause an open or short circuit.
Measure the resistance of the camshaft position actuator solenoid using a multimeter.
Look for: Compare the measured ohms to the manufacturer's specification. An infinite reading (open) or zero reading (short) means the solenoid must be replaced.
Check for proper voltage and ground at the solenoid connector with the key on, engine off (KOEO).
Look for: You should see a 12-volt supply and a good ground/control signal from the ECM. Lack of voltage indicates a wiring or fuse issue upstream.
Perform a continuity test on the wires between the solenoid connector and the ECM.
Look for: High resistance or no continuity indicates a break in the wiring harness that needs to be repaired.
This page explains the generic P0010 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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