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P1811 Diagnostic Trouble Code Discussion for February 2009

Maximum Adaptive And Long Term Shift

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Trouble Ticket Help Requests for DTC P1811
Help Request Posted
2003 Buick LeSabre Custom 3.8L Cuts out, Stall VIN: 1G4HP52K23
P1811: Maximum Adaptive & Long Term Shift. hello thanks in advace. Need help with this buick. car towed in .car starts fine and runs fine with no problem. soon place trans in gear engine stalls out. it will stay running if bring the RPM up to 1500 in gear and it does same thing in reverse. it almost li...
February 23, 2009
2000 Pontiac Bonneville SE 3.8L Poor Fuel Economy VIN: 1G2HX54K8Y
P1811: Maximum Adaptive & Long Term Shift. 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