Question about 2001 Volvo V40

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Check engine light on

Showing 2 codes po101 and po172

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P0101 : Mass air flow censor, Air intake is blocked or the sensor is nackered.
P0172: System too rich bank 1. There's too much fuel, probably to do with the air fuel mix. If you sort the air flow meter that'll sort the two.

Cheers

Posted on Apr 27, 2009

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