P1404 Diagnostic Trouble Code Discussion for October 2016
EGR Position Sensor Rationality Closed
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 P1404
| Help Request | Posted | |
| 2004 GMC Sierra 2500 HD 6.6L MIL Lamp on VIN: 1GTHC23164 P1404: EGR Valve Closed Position Performance. ... you can see we are into these recurring codes, namely: P1404 and P2227. Wires all tested good... looking at stream data it was noticed that the baro sensor signal spikes downward (momentarily) ~ 29.2 to 28.9 in hg... which is weird since you would think o... |
October 02, 2016 |
