P0402 Diagnostic Trouble Code Discussion for July 2009
EGRC-BPT Valve Function
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| Help Request | Posted | |
| 2001 Ford Expedition Eddie Bauer 5.4L Poor Idle Quality, MIL Lamp on VIN: 1FMPU18L51 P0402: EGR flow excessive detected. ... a P0402 Code. Replaced the EGR Valve and DPFE. No change. Owner took to dealer and they disconnected the EGR valve vacuum line and the vehicle runs fine. This vehicle recently had the intake manifold gaskets replaced (not by us) and we found a burn through... |
July 14, 2009 |
