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P1406 Diagnostic Trouble Code Discussion for July 2008

EGR Valve Pintle Position Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1406
Help Request Posted
1994 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G3HN52L1R
P1406: EGR pintle position circuit. Scanned #s are as follows Pintle position is .73v,EGR desired: 0% at idle fluctuates upon acceleration and deceleration, EGR actual position also fluctuates at similar times. Voltages At the plug of the EGR are:Pink 13.45v B+ Grey/blk 5.79 reference Brn .65 Bl...
July 27, 2008