P0401 Diagnostic Trouble Code Discussion for November 2008
Insufficient EGR Flow Detected
Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.Trouble Ticket Help Requests for DTC P0401
| Help Request | Posted | |
| 1997 Chevrolet Monte Carlo LS 3.1L MIL Lamp on, EGR low flow VIN: 2G1WW12M4V P0401: Insufficient EGR Flow Detected. ... on and has no other complaints. Checked codes and found P0410 EGR flow low and P0134 Bank 1 sensor 1 sensor slow switching. Checked flow chart and found that MAP sensor is used to detect EGR flow on decel above 30 mph. Checked EGR ports and were very clean... |
November 08, 2008 | |
| 2000 Hyundai Sonata 2.4L MIL Lamp on VIN: 0WHC37808Y P0401: EGR System - Insufficient Flow Detected. Calling all Hyundai techs. Help needed!! This is a good customer of mine so this is embarassing. MIL came on for EGR insufficant flow. I tested it and found that the passages were dirty because it barely stumbled. I cleaned the passages and the RPM drops drast... |
November 17, 2008 |
