1997 Pontiac Bonneville check engine light is on

Tiny
ROHNWALLACE
  • MEMBER
  • 1997 PONTIAC BONNEVILLE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 125,500 MILES
Hello,
My check engine light just came on but the car is running perfect. What might be the problem? I checked the gas cap. I did fill it with different octane gas 87 then 93, could that be a problem? Also, the rear tail lamp sensor is on although the tail lights work fine.

Thank you for this wonderful service,
Rohn
Wednesday, December 17th, 2008 AT 10:32 PM

1 Reply

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Hi there,

The first thing to do is get a scan done to determine the set fault code, then you can start to do the system diagnoses to find the fault, start here.

Mark (mhpautos)
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Wednesday, December 17th, 2008 AT 10:42 PM

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