The cam sensor interrupter (magnet) may become demagnetized and/or fall off of the camshaft gear causing the Check Engine Light (Service Engine Soon) light to illuminate. On higher mileage vehicles it would be advisable to replace the timing chain and gears if this problem were to occur as the timing cover must be removed to replace the interrupter.
Check Engine Light Due to Cam Sensor Interrupter Fault on Pontiac Bonneville
Average mileage: 100,025 (100,025–100,025)
Engine affected: 3.8L V6
7 people reported this problem
1 person shared problem details
1992 Pontiac Bonneville- 3.8L V6100,025Visitor
Hasn't been fixed. Engine light came on. Scanned and got code 41 cam sensor. Kept driving and engine cuts off but will crank back up. After about two weeks is cutting off more often and now doesn't want to start.
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Illumination of the Check Engine Light can be caused by a loose or worn gas cap.