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P1971

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

P1971

Unreliable Data from Trionic. See Fault Tracing for Fault Code in Trionic.


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 P-bus and I-bus