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P1626 Diagnostic Trouble Code Discussion for February 2009

Theft Deterrent System Fuel Enable Circuit Malfunction

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Trouble Ticket Help Requests for DTC P1626
Help Request Posted
2005 Chevrolet Equinox LT 3.4L Extended Crank VIN: 2CNDL73F25
P1626: Theft Deterrent System Fuel Enable Signal Lost. The Truck has an extended crank after the owner stops it and lets it sit for more than five minutes. the fuel pressure only drops to 54 psi but holds there. When running the pressure is at 60 psi.
February 24, 2009
2000 Pontiac Bonneville SE 3.8L Poor Fuel Economy VIN: 1G2HX54K8Y
P1626: Theft Deterrent System Fuel Enable Circuit Malfunction. Customer brought this car in with the complaint that the fuel milage dropped from 30 mpg to 20 mpg. He changed plugs and cleaned the MAF sensor with no improvment. All the codes I found were history codes. No current codes. On my test drive long term and short...
February 27, 2009