codes help!?!?!? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-27-2005, 01:23 PM   #1
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Default codes help!?!?!?

yea my ***** throwin like 3 diff codes but i odnt understand
i got the 12 code and now i think its throwin a 14 andl ike a 21 but im not sure please help me out on this...
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Old 05-27-2005, 01:34 PM   #2
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Ignore the 12. It'* the handshake code to tell you that communication with the PCM is good. It flashes fault codes three times each after that.

Go ahead and check it again, and let us know.
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Old 05-28-2005, 03:31 PM   #3
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12 Duagnostic mode
14 coolant sensor or circut/ high temperaature indicated
21 Throttle Position Sensoe or circuit - volatge high
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