obd-2 codes p-403 andp-405

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replaced egr valve and cleaned egr passage but codes still set after a couple miles

Nov 2, 2010

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What are the best Buick repair shops?

RepairPal Certified shops can diagnose and repair your 2001 Buick Century. 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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obd-2 codes p-403 andp-405

What is your question?

replaced egr valve and cleaned egr passage but codes still set after a couple miles

waveatpapa in Spartanburg SC

Nov 2, 2010

2 Replies

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Thunder Auto Repairon Nov 2, 2010

Check and replace your IAC Idle Air Control Valve sometimes you will get a code for the EGR and it is the IAC

bobsmoon Nov 2, 2010

There is a reprogramming update that you might want to get done before you pull your hair out. Something about the pintle position and computer expected position. If you want to come to MA - we will take care of you :) Good Luck

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Popular Answer

What are the best Buick repair shops?

RepairPal Certified shops can diagnose and repair your 2001 Buick Century. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.