P2138 2010 Toyota Camry Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
Quick Answer
The Accelerator Pedal Position (APP) sensor is mounted on the accelerator pedal to detect the angle of the accelerator pedal. Common causes include 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. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P2138 2010 Toyota Camry indicates Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
- Common causes
- Common causes include 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.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P2138 2010 Toyota Camry Description
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.
What are the Possible Causes of the DTC P2138 2010 Toyota Camry?
- 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)
How to Fix the DTC P2138 2010 Toyota Camry?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2138 2010 Toyota Camry code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P2138 2010 Toyota Camry Code
1. What does OBDII code P2138 mean for a 2010 Toyota Camry?
P2138 indicates a voltage correlation issue between the throttle pedal position sensor circuits 'D' and 'E', which monitor the accelerator pedal's movement.
2. What are the common symptoms of code P2138 in a 2010 Toyota Camry?
Symptoms may include reduced engine power, the Check Engine Light or Reduced Power Light illuminating, and unresponsive or inconsistent throttle behavior.
3. What causes OBDII code P2138 in a 2010 Toyota Camry?
Common causes include a faulty throttle pedal position sensor, damaged wiring or connectors, or corrosion in the electrical connections.
4. Can I drive my 2010 Toyota Camry with a P2138 code?
It’s not recommended, as the vehicle may go into "limp mode," limiting power and creating potential safety issues while driving.
5. How do I diagnose a P2138 code on a 2010 Toyota Camry?
Start by inspecting the throttle pedal position sensor, checking for damaged wiring, loose connections, or corrosion. Use a scan tool to monitor sensor voltage readings.
6. What is the throttle pedal position sensor in a 2010 Toyota Camry?
The throttle pedal position sensor detects the position of the accelerator pedal and sends voltage signals to the engine control module (ECM) for throttle control.
7. How much does it cost to fix a P2138 code on a 2010 Toyota Camry?
Repair costs can vary, but replacing the throttle pedal position sensor generally costs between $100 and $300, including parts and labor.
8. Can a weak battery cause a P2138 code in a 2010 Toyota Camry?
While rare, voltage issues from a weak battery or charging system problems could potentially affect sensor performance and cause this code.
9. Is replacing the throttle pedal position sensor the only fix for P2138?
Not always. The issue could also be with wiring, connectors, or the ECM. Proper diagnostics should be performed before replacing parts.
10. How can I prevent P2138 from recurring in my 2010 Toyota Camry?
Regularly inspect and maintain the wiring and connectors around the throttle pedal and ensure the sensor is clean and functioning properly.
Discuss the causes and fixes for P2138 2010 Toyota Camry OBDII Code
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