Pontiac Forum - Pontiac Discussion Forums
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Front Wheel Drive 1985-2005
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https://www.pontiactalk.com/forum/front-wheel-drive-1985-2005-58/
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Check engine code P1621
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https://www.pontiactalk.com/forum/front-wheel-drive-1985-2005-58/check-engine-code-p1621-570/
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golinski
Jan 9, 2007 05:38 PM
Check engine code P1621
Hey everyone got a check engine error P1621 Wondering if anyone had anidea what causes it?
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