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- - B3128 code (https://montecarloforum.com/forum/monte-carlo-repair-help-8/b3128-code-4472/)

XSIVPWR

05-20-2007 03:02 PM

B3128 code

Just bought the car from a friend (2002 SS) with 40000 mi and installed a Hypertech programer ( I feel no differance ) and a K& N air filter,anyway it had B3128 code in it. Can anybody tell me what this code is? Thanks.

wiz kidd

05-20-2007 03:50 PM

RE: B3128 code

LF door only, unlock circuit high

thats what the code is....does your door locks work??

XSIVPWR

05-20-2007 11:24 PM

RE: B3128 code

Thanks. Yes they work fine. I also re-installed the Hypertech program and I can feel some difference. Thanks again.

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