1. Check the wiring again: Ensure that the wiring connections to the CMP sensor are secure and free from damage. Look for any loose or disconnected wires, especially around the sensor connector.
2. Test the CMP sensor: You can test the CMP sensor using a multimeter to measure its resistance. Disconnect the sensor connector and refer to the vehicle's service manual for the correct resistance specifications. If the sensor's resistance is out of range, it may be faulty and need replacement.
3. Check the camshaft timing: If the camshaft timing is incorrect, it can cause the CMP sensor to malfunction. You can check the camshaft timing by aligning the timing marks on the camshaft and crankshaft. Refer to the vehicle's service manual for the proper camshaft timing procedure.
4. Inspect the camshaft: The camshaft itself may be damaged or worn, causing the CMP sensor to malfunction. Look for any signs of damage or excessive wear on the camshaft lobes. If the camshaft is damaged, it may need to be replaced.
If you have checked all of these factors and the CMP sensor fault code persists, it's possible that the replacement sensor you installed may be faulty. You may want to try replacing the CMP sensor with another new one to see if that resolves the issue.
Additionally, it's a good idea to have the vehicle scanned for other trouble codes that may be present. Sometimes, multiple fault codes can point to a common issue, so checking for other codes can provide additional information for troubleshooting.
