P2138 2007 TOYOTA HIGHLANDER - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
P2138 2007 TOYOTA HIGHLANDER Possible Causes
- Faulty Accelerator Pedal Position (APP) Sensor
- Accelerator Pedal Position (APP) Sensor harness is open or shorted
- Accelerator Pedal Position (APP) Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
First diagnose P2138 2007 TOYOTA HIGHLANDER code
Check the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded terminals.
Cost of diagnosing the P2138 2007 TOYOTA HIGHLANDER code
Labor: 1.0The cost of diagnosing the P2138 2007 TOYOTA HIGHLANDER code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle's make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
P2138 2007 TOYOTA HIGHLANDER Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
P2138 2007 Toyota Highlander DescriptionThe Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. This sensor is electronically controlled and uses Hall-effect elements.
In the accelerator pedal position sensor, the voltage applied to terminals VPA and VPA2 of the Engine Control Module (ECM) changes between 0 V and 5 V in proportion to the angle of the accelerator pedal. The VPA is a signal to indicate the actual accelerator pedal angle and is used for the engine control. VPA2 is used to detect malfunctions of the sensor itself.
The ECM monitors the accelerator pedal angle from VPA and VPA2 signal outputs, and controls the throttle motor based on these signals.
P2138 2007 TOYOTA HIGHLANDER More InformationNeed more information on how to fix the P2138 2007 TOYOTA HIGHLANDER code?
Get Access to Factory Service Manuals
Need more help?Get the P2138 2007 Toyota Highlander code diagnosed by a professional: Find a repair shop in your area
P2138 2007 TOYOTA HIGHLANDER CommentsHelp us improve AutoCodes.com. Leave a comment below or tell us if the information above help you fix the code. What are the symptoms on your vehicle for the P2138 2007 Toyota Highlander code? Have you replaced any parts?
Any information is appreciated. Thanks