Thread: 1999 GTP supercharged setting maf codes, tp sensor and others
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Old 03-15-2010, 07:22 PM   #3
BNaylor
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Re: 1999 GTP supercharged setting maf codes, tp sensor and others
It sounds like you have multiple issues. With the CAT converter code assuming it is P0420 DTC it sounds like the converter is one issue.

The shifting is abnormal due to a pressure control solenoid (PCS) issue. Code P1811?


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