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P0405 Diagnostic Trouble Code Discussion for June 2010

EGR Position Sensor Circuit Low Voltage

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Trouble Ticket Help Requests for DTC P0405
Help Request Posted
2000 Chevrolet Silverado 2500 LS 6.0L Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCFC29U8Y
P0405: EGR Position Sensor Circuit Low Voltage. ... due to engine misfire. Got codes po158, po300, po171 and p0405. When the engine goes into closed loop, the engine will misfire on number 2,4,6, and 8 which is one bank. Number 1,3,5,7 has no misfire at idle. Replace the oxygen sensor on bank 2 sensor 2 and...
June 09, 2010