Codes access

Tiny
MCMAHOMA
  • 1989 PONTIAC BONNEVILLE

Computer problem
1989 Pontiac Bonneville 6 cyl Two Wheel Drive Automatic 230000 miles

how do I pull codes off of this car? Check engine light keeps coming on when idling @ stop. Thank you

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Tuesday, February 5th, 2008 AT 2:34 AM

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Tiny
RASMATAZ
  • MEMBER

Not familiar with your model but normally its located below

The diagnostic check connector should be on the bottom of the dash-right of steering column 16pin connector-jumper the two upper right terminal A to B

Count the flashes XX XXX X X XXX XX XXX equals to code 23

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Tuesday, February 5th, 2008 AT 4:05 AM
Tiny
MCMAHOMA
  • MEMBER

It flashed 1-2-1-2-1-2-7-3-8-39-43-43-43-44-44-44-1-2-1-2-1-2-21-21-34-39-39-39-43-43-43-44-44-44-1-2 andso on repeating. I got the 1-2 are set numbers. And 34-44-39-21 are all trouble codes. But the other numbers I don't know why they are in there. Where can I find out what these codes mean? Thank you for your time. I really appreciate it.

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Tuesday, February 5th, 2008 AT 2:45 PM
Tiny
RASMATAZ
  • MEMBER

DTC's

21=throttle position sensor

34=mass airflow sensor

39=torque converter clutch

44=lean exhaust

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Tuesday, February 5th, 2008 AT 2:57 PM

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