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P0405 Diagnostic Trouble Code Discussion for June 2009

EGR Position Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0405
Help Request Posted
2001 Isuzu Trooper Limited 3.5L Excessive Emissions, MIL Lamp on VIN: JACDJ58X21
P0405: EGR Pintle Position Sensor Circuit Low Voltage. Came in from another shop that replaced egr valve and map and maf sensor. Fails state e-test for nox and high co. Passed co before new parts were replaced. Co went from 7.5 ppm to over 15. Nox stayed about the same. Cleared egr code and resets within 10 minute...
June 17, 2009
1999 Chevrolet Astro 4.3L MIL Lamp on VIN: 1GCDM19W4X
P0405: EGR Position Sensor Circuit Low Input. ... strange one here. I keep getting a DTC p0405, low egr voltage. I have replaced the EGR valve and the code still pops up. Here is the freez frame data at the time the code is triggered: RPM 709, VEHICLE SPEED 0, CALC ENGINE LOAD 3%, LONG TERM FT BANK 1 AND ...
June 21, 2009