P0401 Diagnostic Trouble Code Discussion for August 2015
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 2001 Toyota Tacoma DLX 2.7L MIL Lamp on VIN: 5TEPM62N71 P0401: EGR System Insufficient Flow Detected. ... it has a code for p0401 egr insufficient flow. customer replaced the vsv. i have 5 inhg vacuum at the egr when the egr is commanded on. i checked the egr and at 5 inhg it opens all the way. the egr ports are wide open. i removed the throttle body and the 3... |
August 20, 2015 |
