DTC P0120-81: Throttle/Pedal Position Sensor A Circuit - Invalid serial data received: Action

NOTE: This is not a vehicle harness issue or anti-lock brake system control module issue. The data source module has sent information which it has marked as invalid

Using the Jaguar Land Rover approved diagnostic equipment, inspect the snapshot data to determine the invalid data source control module. Inspect the relevant control module for Diagnostic Trouble Code(s) and refer to the relevant DTC index

CAUTION: This procedure requires a minimum of Pathfinder 277 loaded or later

NOTE: The Jaguar Land Rover (JLR) approved diagnostic equipment will read the VIN for the vehicle and automatically take the vehicle out of 'Transportation Mode' if required

Connect the JLR approved battery support unit
Connect the JLR approved diagnostic equipment to the vehicle and begin a new session
Follow the JLR approved diagnostic equipment prompts
Select 'ECU Diagnostics'
Select 'Powertrain Control Module (PCM)'
Select 'Update ECU'
Follow all on-screen instructions to complete the task
If required, reset the vehicle to 'Transportation Mode'
When all of the tasks are complete, exit the session
Disconnect the JLR approved diagnostic equipment and the JLR approved battery support unit