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P0402 Diagnostic Trouble Code Discussion for March 2010

EGRC-BPT Valve Function

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Trouble Ticket Help Requests for DTC P0402
Help Request Posted
1995 Lincoln Town Car Executive 4.6L MIL Lamp on VIN: 1LNLM81W0S
P0402: Excessive EGR A flow detected. ... light, code p0402, Excessive EGR Flow. vacuum is at 19.5 inches. I replaced the Egr valve and Egr tube with parts from the ford dealer. vehicle came back 2 months later with a p0174 lean bank 2 code. I smoked tested the intake and couldn't find any leaks. ...
March 10, 2010
2002 Volkswagen Jetta TDI 1.9L MIL Lamp on VIN: 3VWSP69M52
P0402: excesive egr flow detected. This car has a reoccuring code p0402 that we can't seem to figure out.intake was cleaned about 50,000 miles ago.all vaccum lines to egr were checked and egr solenoid was replaced.light only seems to come on when you accelerate to pass someone and then decel to...
March 15, 2010
1999 Nissan Sentra SE 2.0L MIL Lamp on VIN: 3N1BB41D5X
P0402: EGRC-BPT Valve Function. ... law that had a check engine light on forever. P0402, The back pressure transducer tested bad and was replaced. The light came back on and everything in the system was thoroughly tested, EGR solenoid works as designed. the vacuum hoses are run properly and ...
March 25, 2010