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P0402 Diagnostic Trouble Code Discussion for September 2005

EGRC-BPT Valve Function

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Trouble Ticket Help Requests for DTC P0402
Help Request Posted
1995 Lincoln Town Car 4.6L Hesitation, Misfire VIN: 1LNLM81W1S
P0402: excesive EGR. This one came in with more than one problem, hesitation in passing gear, stuble on snap throttle. better when warm but still there. MAF reading KOEO was off 9 Hz. Replaced. Now 159 Hx, good. DPFE read 1.2 volts, guys on chat said too high, TSB with new ranges....
September 20, 2005