2004 Audi S4 CEL too rich

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My 2004 Audi S4 4.2L CEL came on this weekend the codes are p0174 and p0175 system to rich bank 1 and 2. Check air filter and it looks clean, could this be a Mass airflow sensor? What should be my plan of attach or simply just take it into the shop? Cheers,

askaustin in Ridgefield WA

May 25, 2015

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What are the best Audi repair shops?

RepairPal Certified shops can diagnose and repair your 2005 Audi S4. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.

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What is your question?

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2004 Audi S4 CEL too rich

What is your question?

askaustin in Ridgefield WA

May 25, 2015

1 Reply

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Steves Importson May 26, 2015

We have seen this related to failures in regards to the high pressure fuel pump. It could be a number of things but having worked on several of the S4's we have seen this as a cause for this fault code. I would recommend bringing it in for further diagnosis.

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Popular Answer

What are the best Audi repair shops?

RepairPal Certified shops can diagnose and repair your 2005 Audi S4. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.