P0011 but no CEL - Chevy Impala Forums
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P0011 but no CEL

06 LT 3.5
No check engine light and seems to be running ok but when I scan with my blue driver scan tool it comes up with P0011 under Engine Control Module. Tried clearing it and it returns a few days later. Wrote to blue driver they said it is an “enhanced” or manufacturer specific code and it is in fact an issue just not severe enough to trip the CEL. Any ideas?? Similar issues?
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Oil clean/changed on time?

Cam position actuator can be borderline.
See ALLDATA.com for troubleshooting procedures.
Circuit/System Description

The camshaft position (CMP) actuator system enables the engine control module (ECM) to change the timing of the camshaft while the engine is operating. The ECM controls the Camshaft Position Actuator Magnet duty cycle by controlling the amount of ON time. The magnet controls the amount of engine oil flow to the CMP actuator by extending a pintle within the solenoid. The pintle acts against a spool valve in the CMP actuator mechanism which is attached to the front of the camshaft. As the spool valve is moved, oil is directed to the CMP actuator, which rotates the camshaft. The ECM can only command the camshaft position actuator to retard the valve timing from the camshaft park position, or advance the valve timing back to the park position.
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