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P1811 Diagnostic Trouble Code Discussion for October 2013

Maximum Adaptive And Long Term Shift

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Trouble Ticket Help Requests for DTC P1811
Help Request Posted
2005 Cadillac DeVille 4.6L MIL Lamp on VIN: 1G6KD54Y65
P1811: Maximum Adaptive and Long Term Shift. ... intermittent harsh shifting. We have code P0172 which indicates throttle position sensor 1 circuit short/low. Testing verified that TPS is good but that we have no 5 volt reference coming out of computer pin#8 at connector 2 of pcm. This pin#8 only supplie...
October 14, 2013