Code 41, Cam Sensor Circuit (3.8L): Notes

Code 41 will set if engine is running and a cam sensor signal is not received by ECM for last 5 seconds.

NOTE: Test numbers refer to numbers on diagnostic chart.

Verifies proper operation of circuits No. 633, 644 and 645.
Tests circuit No. 630 from C(3)I module to ECM.
If camshaft gear magnet is interfacing with cam sensor, voltage reading will be zero. Bumping engine should correct this condition.
If voltage reading is constantly varying around a midpoint of 4.6 volts and connections are good, PCM is faulty.