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.
DTC P0344: CMP Sensor Circuit Intermittent Interruption
- Turn the ignition switch ON (II).
- Clear the DTC with the HDS.
- Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED
- VSS
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0344 indicated?
YES -Go to step 5.
NO -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at the CMP sensor and the PCM.
- Check for poor or loose connections at these connectors and terminals:
- CMP sensor
- PCM
- Engine ground
- Body ground
Are the connections OK?
YES -Go to step 6.
NO -Reconnect or repair the connectors or terminals, then go to step 9.
- Check for damage to the CMP sensor pulse projection on the front camshaft pulley (see CKP SENSOR REPLACEMENT
).
Is there damage?
YES -Replace the front camshaft pulley (see CKP SENSOR REPLACEMENT ), then go to step 9.
NO -Go to step 7.
- Turn the ignition switch OFF.
- Replace the CMP sensor (see CKP SENSOR REPLACEMENT ).
- Turn the ignition switch ON (II).
- Reset the PCM with the HDS.
- Clear the CKP pattern with the HDS.
- Do the PCM idle learn procedure (see PCM IDLE LEARN PROCEDURE ).
- Do the CKP pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN ).
- Test-drive the vehicle for several minutes in the range of these recorded freeze data parameters:
- ENGINE SPEED
- VSS
- Check for Temporary DTCs or DTCs with the HDS.
Is DTC P0344 indicated?
YES -Check for poor connections or loose terminals at the CKP sensor and the PCM, then go to step 1.
NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the indicated DTC's troubleshooting.
NO RELATED
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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.