Engine not running properly, codes 41 and 42?

Tiny
DEEDOGG
  • MEMBER
  • 1992 BUICK PARK AVENUE
  • 190,000 MILES
I'm getting codes 41 42 some time it starts sometimes when I push the gas pedal it stalls.
Thursday, September 22nd, 2022 AT 6:47 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,256 POSTS
Hello,

the codes:

41 - Camshaft sensor circuit fault, ignition control circuit fault

42 - Electronic spark timing (EST) circuit grounded

I would start with the ignition module replacement; Also, I would replace the coils which cause the module to go out. This is common with these cars here is the location of the module and how to change it out in the images below. Check out the images (below). Please let us know what happens.
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Friday, September 23rd, 2022 AT 10:11 AM

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