1990 Pontiac Bonneville Engine Diagnostic Codes

1990 PONTIAC BONNEVILLE
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SOTOFLEX
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Computer problem
1990 Pontiac Bonneville 6 cyl Front Wheel Drive Automatic

Can you tell me what codes are 23, 34 ,42 and 44?
Sep 24, 2009 at 1:04 PM
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BLUELIGHTNIN6
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your vehicle uses the OBD II system, the trouble codes should be similar to this EX: P1200 , B1327 etc.. . Have a part store retrieve the trouble codes for you with their scanner. Most do it free of charge.
Sep 24, 2009 at 1:15 PM
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SOTOFLEX
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sorry i wrote the wrong year, its a 1990
Sep 24, 2009 at 1:36 PM
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BLUELIGHTNIN6
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oh ok, give me just a minute and i'll pull the code details for you
Sep 24, 2009 at 1:51 PM
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BLUELIGHTNIN6
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CODE 23 : MAT Sensor Signal Volt High

CODE 34: MAF (mass airflow) sensor faulty / not reading

CODE 42: EST Ignition Circuit

CODE 44: Lean Exhaust Indication
Sep 24, 2009 at 2:37 PM
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SOTOFLEX
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thanks a million!!
Sep 24, 2009 at 6:52 PM