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Old 12-29-2009, 08:08 PM
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P0172 System too rich bank 1
Check engine light came on today on first start up.
Got the code read:

P0172 System too rich bank 1


They reset the check engine signal and it did not come back on.



Did a dirty/ failing sensor trigger this? Possibly MAF from posts I searched. Is cleaning a MAF recommended or is replacement a must?

What you do you guys think?

Thanks,
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