P1971

Incorrect information from the Trionic system





Fault symptoms
CHECK GEARBOX warning lamp on.
The TCM is possibly in Limp-Home mode (emergency operation program).

Conditions
Incorrect information from the Trionic system

Diagnostic help
Incorrect engine torque information on the P bus causes the TCM to generate diagnostic trouble code P1971.
Incorrect accelerator position information on the P bus causes the TCM to generate diagnostic trouble code P1971.
See fault diagnosis, Trionic, refer to Powertrain management.