P0010 Code- Intake Camshaft Position Actuator Solenoid Control Circuit

What Does Code P0010 Mean

P0010 is a generic OBD-II code indicating an issue with the engine control module (ECM) detecting a variation in the mechanical timing between the crankshaft and bank 1 camshaft. The timing issue is typically detected during higher RPMs of the engine when the ECM attempts to adjust valve lift during higher speeds.

The ECM uses sensors to detect the position of the crankshaft and camshaft(s). From these sensor signals, the ECM controls ignition, valve lift, and fuel timing under various speeds and loads. The code will illuminate the Check Engine Light and possibly reduce engine performance.

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Possible symptoms

• Engine Light ON (or Service Engine Soon Warning Light)

Possible causes

• Dirty Oil
• Low engine oil level
• Faulty Intake Camshaft Position Actuator Solenoid
• Intake Camshaft Position Actuator Solenoid harness is open or shorted
• Intake Camshaft Position Actuator Solenoid circuit poor electrical connection
• Faulty Engine Control Module (ECM)

Troubleshooting P0010

Troubleshooting Code P0010 involves a circuit check, and all diagnostic procedures must therefore include inspecting, and testing the wiring harness and control solenoid. The circuitry is relatively simple, consisting for the most part of a 12 volt DC power supply to the oil flow control valve, a ground pin to which the ECM supplies a ground at the correct time and in the correct amount, and a feedback loop to the ECM to confirm functionality.

Basic trouble shooting steps

• With the engine off, check the electrical connector on the oil flow control valve for signs of damage, looseness, and/or corrosion. Clean, replace, or repair connector as required.

• Check for continuity in the wiring at the oil flow control valve. If continuity is interrupted, inspect wiring to trace breaks, and/or poor connections, and repair as required.

• Check oil flow control valve solenoid resistance, and compare results with the value specified i the repair manual. Replace solenoid if resistance is out of spec.

• With the engine off, remove the oil flow control valve solenoid, and apply power directly from the battery, but ensure a sound ground connection is made. Replace the solenoid if a direct power supply fails to activate the solenoid.

• If a direct connection activates the solenoid, replace the solenoid, and inspect the wiring between the solenoid and the ECM for short circuits, open circuits, or high resistance. Repair as required.

• If all wiring checks out OK, use a suitable scan tool to check the functioning of the oil flow control solenoid and valve. The valve should be closed during idling, but higher engine speeds will activate it. Check the status of the valve through the rev range of the engine to see if it changes from “OFF”, to “ON” as the engine speed changes. Replace the solenoid/valve if the status does not change.

• In cases where the pulse width of the oil flow control valve is modulated, the active duty cycle should vary with engine speed. If this does not happen, the cause is almost certainly due to a defect or malfunction in the ECM.

• In cases where the ECM delivers valid commands to the oil flow control valve, but the cam/valve timing does not return to the base timing, or where the cam phaser does not advance/retard timing sufficiently or correctly, there may be an intermittent fault in the control solenoid, or in the associated wiring. In these cases, it is advisable to replace both the oil flow control solenoid, and the entire harness that controls it. If the fault persists, have the ECM tested if possible, or replace the ECM.

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