Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Circuit Description
The DTC P1349 Intake Camshaft Position (CMP) System diagnostic monitors operation of Camshaft Position (CMP) actuator solenoid. CMP actuator solenoid enables the Powertrain Control Module (PCM) to change intake camshaft timing while engine is running. CMP actuator solenoid contains a spool valve that controls the advance of the camshaft. CMP actuator solenoid is controlled by a Pulse Width Modulated (PWM) signal from PCM. CMP sensor monitors camshaft position or camshaft angle, and compares that position or phase to Crankshaft Position (CKP) senor signal. PCM determines whether camshaft angle is correct by comparing actual camshaft position to target camshaft position. By continuously analyzing the input of CMP and CKP sensors, PCM can detect a fault in CMP actuator system.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.