P0401 Diagnostic Trouble Code Discussion for May 2016
Insufficient EGR Flow Detected
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| Help Request | Posted | |
| 2001 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4HP54K51 P0401: Insufficient EGR Flow Detected. Customer came in with code P0401- low flow EGR. checked EGR operation with scanner. desired, commanded and sensed were all within range until top of EGR was wiggled- EGR is physically loose in its housing and wiring harness is loose as well. REPLACE BOTH with ... |
May 24, 2016 |
