My question is about my 2004 saturn ion 2.2L. Engine misfires and looses power intermittently. I plugged the code reader and gave me PO341 (camshaft position sensor A circuit range performance (bank 1 or single sensor).


The 2.2L L61 engine doesn't use a traditional camshaft position sensor. The ignition control module senses firing events. Then generates a CMP signal to send to the PCM. This could be a wiring issue, a failure in the ICM or a secondary ignition problem (e.g. spark plugs/coil pack).

A clean CMP signal needs to be confirmed at the PCM and make sure that the coil pack can produce a strong enough spark on cylinders 1 & 4.

  • Excellent explanation; this is just what i was looking for. – Moises Carrasco Oct 9 '17 at 21:27

Buy a repair manual and look up what to do for that code. Have you done a tune up recently? Maybe the sensor needs to be replaced?

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.