P0010
A Camshaft Position Actuator A Control Circuit/Open Bank 1.
- Generic
- Powertrain
- Generic code
- Medium severity
How this code is built
- P
- SystemPowertrain
- 0
- Defined bySAE, the same on every car
- 0
- AreaFuel and air metering, auxiliary emission controls
- 10
- FaultThe specific fault in that area
What it means
P0010 is the generic code for a fault in the control circuit of the 'A' camshaft position actuator on Bank 1. This is usually the oil control solenoid that adjusts variable valve timing on the intake camshaft, though 'A' can mean intake or exhaust depending on the engine. The engine control unit sets the code when the voltage or current it expects in the actuator circuit does not match what it measures, which points to an open circuit, a short or a faulty actuator.
Symptoms
- Engine warning light on
- Rough or unstable idle
- Hesitation or reduced power under acceleration
- Poor fuel economy
- Engine stalling or hard starting in some cases
- Rattling or ticking from the timing area on some engines
Possible causes
- Faulty camshaft position actuator or oil control solenoid (internal open or short circuit)likely
- Damaged, chafed or corroded wiring between the actuator and the engine control unitlikely
- Poor connection at the actuator plug or control unit connector (corrosion, loose pins, oil contamination)likely
- Low, dirty or incorrect engine oil causing the solenoid to stick or the circuit to be affected by debrispossible
- Blocked oil screen or filter on the solenoid, depending on the engine designpossible
- Low battery voltage or a charging fault upsetting the circuit readingspossible
- Fault inside the engine control unit driver circuitrare
How to diagnose
- Read all stored and pending codes and note the freeze frame data (engine temperature, load, speed) to see when the fault set.
- Check engine oil level, condition and grade against the manufacturer specification, and note any sludge or overdue service.
- Inspect the actuator, its plug and the wiring for oil contamination, damage, chafing, melted insulation and corrosion.
- Check battery condition and charging voltage, as low voltage can cause circuit faults.
- Measure the actuator coil resistance and compare it with the manufacturer specification for your engine.
- Check the supply and control wiring for continuity, short to earth and short to voltage between the actuator and the control unit.
- Command the actuator with a suitable scan tool active test, if the vehicle supports it, and check for a response and a correct control signal.
- Check for relevant technical service bulletins or software updates for your model, as procedures and known faults vary by engine.
How to fix
- Replace the camshaft position actuator or oil control solenoid if its resistance or operation is out of specification.
- Repair or replace damaged wiring and terminals, and clean or renew the affected connector.
- Renew the engine oil and filter with the correct specification, and clean or replace the solenoid screen where fitted.
- Correct any battery or charging system fault.
- Update the engine control unit software only if a known fault with the existing calibration is confirmed for your vehicle.
- Repair or replace the engine control unit only after all wiring and actuator faults are ruled out.
Can I keep driving?
The car can usually be driven short distances to get it checked, but fix it soon as poor valve timing can worsen performance and fuel economy, and low oil level or condition could cause engine damage. Avoid heavy loads and long journeys until it is diagnosed.
Guide written by AI from the code's definition. Confirm with a diagnosis before replacing parts.