View Full Version : 1990 buick riviera code 41

04-07-2009, 05:10 AM
1990 buick riviera code 41 in my haynes manual there are 3 code 41. One for carb does not apply. The next is for 3.8 which is a cam sensor. The next is for f/i. Botg apply. How do i know which is correct?

04-07-2009, 05:24 PM
Hi kdmoreau,

For your model year Riviera, Code 41 is related to the cam sensor or circuit.

Just curious, though - what manual are you using? The Haynes manual for your Riv is 38031, and there's only one code 41 listed. The Haynes Computer Code Techbook and the Haynes Emissions Control Manual don't seem to match your description either.