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P1406 Diagnostic Trouble Code Discussion for November 2004

EGR Valve Pintle Position Circuit Malfunction


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Trouble Ticket Help Requests for DTC P1406
Help Request Posted
1996 Buick Century Custom 3.1L MIL Lamp on VIN: 1G4AG55MXT
P1406: EGR Valve Pintle Position Circuit Malfunction. I'm at wits end. At key on egr pintle is at 0%at idle goes to 18 to 22% when egr is installed but when another egr is plugged in laying on engine and grounded will show 0% I also had this 2nd egr installed on vechicle while running at id showed 20% did not fin...
November 23, 2004
1996 Buick Century Custom 3.1L MIL Lamp on VIN: 1G4AG55MXT
P1406: EGR Valve Pintle Position Circuit Malfunction. I'm at wits end. At key on egr pintle is at 0%at idle goes to 18 to 22% when egr is installed but when another egr is plugged in laying on engine and grounded will show 0% I also had this 2nd egr installed on vechicle while running at id showed 20% did not fin...
November 23, 2004