P1DF9 FIAT – Actual Increase Of Engine Torque Low

P1DF9 FIAT Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light)

P1DF9 FIAT Possible Causes

Faulty Powertrain Control Module (PCM),Faulty Transmission Control Module (TCM)

P1DF9 FIAT Description

The purpose of the diagnostic is to monitor if the Powertrain Control Module (PCM) executed the torque requested by the Transmission Control Module (TCM). This is determined by comparing the PCM’s executed torque to the original torque requested by the TCM over the Controller Area Network (CAN) bus. These torque requests only occur during shift operations. This diagnostic checks for engine torque increase too low.