What causes GM code 17?

Failed cam position sensor or magnet Damaged sensor wiring or loose connector Excessive sensor air gap or debris on the sensor tip Faulty ignition module not passing the cam signal

How do I fix GM code 17?

Check for related crank sensor codes and diagnose those first Inspect sensor wiring for chafing near the timing cover Test sensor output with a meter while cranking per the service manual Verify sensor air gap and mounting before replacing it Clear codes and confirm the signal returns on a scan tool

17 Camshaft Position Sensor Error

Q: What does GM code 17 mean?

GM code 17. Camshaft Position Sensor Error. Applies to 1986-1995 GM cars with DIS ignition, 3.1L and 3800 V6 models.

Make: GM (1982-1995)
Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: 1986-1995 GM cars with DIS ignition, 3.1L and 3800 V6 models

How to read it

Code 17 reads as 1 flash, pause, 7 flashes on the check-engine light. Jump terminals A and B on the ALDL connector with the key off, then turn the key on with the engine off and count the check-engine flashes.

What does GM code 17 mean?

17. Camshaft Position Sensor Error. This code sets when your vehicle computer detects camshaft position sensor error.

Common causes of 17

Failed cam position sensor or magnet
Damaged sensor wiring or loose connector
Excessive sensor air gap or debris on the sensor tip
Faulty ignition module not passing the cam signal

How to fix 17

Check for related crank sensor codes and diagnose those first
Inspect sensor wiring for chafing near the timing cover
Test sensor output with a meter while cranking per the service manual
Verify sensor air gap and mounting before replacing it
Clear codes and confirm the signal returns on a scan tool