P2135 FORD Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation

Possible causes
– 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 position sensor
Symptoms
– Engine Light ON (or Service Engine Soon Warning Light)
P2135 FORD Description
Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.

FORD Technical Service Bulletins for P2135 code
2003 FORD THUNDERBIRD ELECTRICAL SYSTEM
2004 FORD EXPLORER ELECTRICAL SYSTEM
2004 FORD F-150 ELECTRICAL SYSTEM
2004 FORD THUNDERBIRD ELECTRICAL SYSTEM
2005 FORD EXPLORER ELECTRICAL SYSTEM