and your other code.The transmission pressure is modified by an adaptive modifier which controls the shift execution time. This test checks the time required to accomplish the shift. If the shift takes longer than 0.65 seconds, and the adaptive modifier cannot shorten this time, then a counter increases by one.
If the PCM detects the counter reaching two, then DTC P1811 sets. DTC P1811 is a type D DTC., and for this there is a tsb to replace the pressure control solenoid, part number 10478146, i hope this helps
