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P0405 Diagnostic Trouble Code Discussion for October 2008

EGR Position Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0405
Help Request Posted
1999 Chevrolet Venture 3.4L MIL Lamp on VIN: 1GNDX03EXX
P0405: EGR Sensor Circuit Low Voltage. This Vehicle was sitting next to a tree that was struck by lightning. Towed to shop and was a no start. Unable to communicate with PCM. Checked all circuts from PCM connectors for proper resistence and checked powers and grounds. Replaced PCM and flashed with ...
October 07, 2008
2005 Chevrolet Malibu LS 3.5L MIL Lamp on VIN: 1G1ZT54875
P0405: EGR Position Sensor Circuit Low Voltage. ... EGR valve.It takes a while for the codes to set, but it is frustrating for both me and the customer. The dealer did the service bulletin for code P0404 on 1-2-07 @ 32636 miles which was to replace the Delco EGR valve with a Seimens part,tubes,gaskets,conne...
October 14, 2008
2000 Saturn LW1 2.2L No Start, MIL Lamp on VIN: 1G8JU82F3Y
P0405: egr sensor a circuit low. I replaced both coils and all the plugs put everything back together and started the vehicle, the check engine light remained and the engine was visibly misfiring so I rescanned to confirm. There now was a multiple misfire in bank 1 3 5 no longer isolated in c...
October 16, 2008