Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
1995 Cadillac Eldorado BaseFACTORY OEM SERVICE PROCEDURE
Code P041, No Cam Reference Sens SGNL From IGN Control Module: Action
PCM turns on MIL.
NOTE:
Test numbers refer to numbers on diagnostic chart.
- Checks if Code P035 is set because a REF LO problem can cause other ignition problems.
- Checks resistance of camshaft position sensor. Resistance should be 800-1200 ohms. If resistance is greater, check for an open circuit. If resistance is less, check for a short.
- Checks if circuits No. 632 or 633 is shorted to ground.
- Checks if sensor is able to produce a DC voltage greater than 0.2 volt. If it can, sensor is okay.
- A reading of 4 Hertz with engine running means that ignition control module is producing cam pulses.
- Checks if circuit is at fault or if ICM is faulty.
Factory Service Tools
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.