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P0402 Diagnostic Trouble Code Discussion for March 2008

EGRC-BPT Valve Function

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Trouble Ticket Help Requests for DTC P0402
Help Request Posted
1999 Mazda Miata 10th Anniversary 1.8L MIL Lamp on VIN: JM1NB3538X
P0402: excessive egr flow. ... voltage reading for the egr boost sensor at rest with no vacuum applied to it. the reading i have is 4.24v key on engine off. the intake manifold has been removed and the egr passages and boost sensor hole have been cleaned. egr valve has also been replace...
March 20, 2008
2001 Volkswagen Beetle GLS 1.9L MIL Lamp on VIN: 3VWCP21C21
P0402: EGR Excessive Flow. ... re-occuring P0402 egr excessive flow code after one normal drive cycle. The code will set even with vacuum to the egr valve disconnected. I have replaced the egr valve, MAF sensor and also removed and cleaned the intake manifold due to excessive carbon bui...
March 25, 2008
1999 Mazda Miata 10th Anniversary 1.8L MIL Lamp on VIN: JM1NB353XX
P0402: EGR Excessive Flow. ... starting to bother me. Came in with P0402 (EGR Excessive Flow), we replaced egr valve, boost sensor and boost solenoid. Customer picked up car and put about 25 miles on it and code came back on. At this time we found the tsb for this code, removed egr valv...
March 28, 2008