Pryde

Hello!

Still quite new to the forum. Have been doing lots of research regarding my issue. I have a CEL P0340, camshaft circuitry malfunction.

A description of the vehicles performance:
It is night and day, and random. The engine will typically have prolonged starting times, but usually only when cold/semi warm. One trip (50km max, lets say) the car will act as it normally should with no issues. The next random trip the car will hesitate, bog, have no power, randomly. When accelerating you can feel the car gaining power, then it will stop as if the engine is shutting down and then wam, harshly another engine rotation occurs and gets things rolling again.

Originally I got P0302, then P0300 codes which was P0300, P0301, P0303, along with P0420, P0420pd. Now I currently only get P0340, P0420, P0420pd. The P0300 codes only register when you let the car bog and continue to try to force it to go; finally a misfire code registers.

What I've suspected:
1. Camshaft sensor
2. Camshaft circuit
3. Timing

What I've done:
1. Verified 12V power, ground and signal power to the Camshaft sensor

• 12V is present from the battery
• A ground is present
• 3V signal power (I'm told this should be around 5V?)

2. Verified proper timing, cleaned both camshaft and crankshaft sensors (camshaft sensor didn't have any debris, crankshaft sensor had some engine oil present).

• Completed a timing belt/water pump job, since it was due

P0340 IS STILL PRESENT!

Should I go ahead and replace the sensor? Suggestions, words of wisdom, experience, etc. are all welcome!

Thank you in advanced.

NDNV

I'd go through the troubleshooting first before assuming it is the camshaft sensor.

Reset PCM and see if P0340 comes back - may be intermittent.
Check for poor/loose connections and terminals at both sensor and PCM.
Measure resistance at the terminals at sensor to see if falls within spec. If not, replace sensor.
Check continuity to ground and sensor. If yes, replace sensor.
Measure resistance between the terminals of the sensor and the PCM connector to see if falls within spec. If not in spec, repair the open in sensor wires.
Check continuity to ground and PCM. If yes, repair short in ground wire. If no, might be a bad PCM.

I had a bad camshaft sensor go in an Odyssey and the symptoms were I could start the van and begin to drive away but suddenly shut down. Had to have it towed. It had the P1361 and P1366 codes though. Solution was to replace the sensor. A bit of labour to replace though $$$.

The sensor would only be around $40.