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Hi,you need to perform a basic setting for the throttle for this job use a scan tool and the problem will be solved it's a software failure the ecu need to learn via the basic setting .
Possible fault related to the P2135 are the following
Faulty electric throttle control actuator (TP sensor 1 and 2)- Throttle Position Sensor harness is open or shorted- Throttle Position Sensor circuit poor connection
- Faulty accelerator pedal sensor
ok you find in the attachment the wiring of your car good luck