Saturn Repair Problems? Ask a Mechanic for Answers ASAP
Hello, my name is***** is no resistance specification for the crankshaft position sensor and checking resistance is not a good way to test the sensor. This code/symptom almost always means the crank sensor has failed, has it been replaced? Thanks.
Disconnect sensor and check to see if both wires going to sensor have 5v with key on. Let me know, thanks.
Have you tested crankshaft position sensor resistance at ECM plug to verify resistance is the same which would prove wiring to be good?
As of now it either sounds like wiring has been shorted to ground or ECM has failed.
I don't see any other possible options besides failed ECM at this point and I'd go ahead and replace. The rear o2 sensor would not effect crank sensor signal to the ECM so I agree that would not be your issue. Let me know if you have more questions, thanks.
The ECM provides the crank sensor the voltage so that would also confirm ECM as problem. This code means ECM does not see a crank signal which would be caused by crank sensor, wiring, or ECM. You have already replaced crank sensor and verified wiring is good leaving the ECM as last possible option. A failed CKP will usaully cause no spark, not intermittent spark. Let me know if you have more questions, thanks.