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P1406 Diagnostic Trouble Code Discussion for October 2004

EGR Valve Pintle Position Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1406
Help Request Posted
1997 GMC Savana 1500 5.7L No Start, MIL Lamp on, pings VIN: 1GKFG15R3V
P1406: EGR Valve Pintle Position Circuit Malfunction. Customer brought the van pinging badly on acceleration, enough that it made me wince to drive it. Checked codes, MAF code, EGR pintle, and a freeze frame code for TPS in memory. Checked datastream, the baro reading is at 53 kpa, only about half of what it shou...
October 09, 2004