P2138 2006 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 2006 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 2006 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 2006 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 2006 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2138 2006 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 2006 Toyota Camry Code
1. What does OBDII code P2138 mean for a 2006 Toyota Camry?
P2138 indicates a voltage correlation issue between the Throttle Pedal Position Sensor/Switch 'D' and 'E', which monitor the throttle pedal's position.
2. What are the symptoms of code P2138 in a Toyota Camry?
Symptoms can include reduced engine performance, throttle hesitation, limited acceleration, the vehicle entering "limp mode," or an illuminated check engine light.
3. What causes the P2138 code to appear?
Common causes include a faulty throttle pedal position sensor, damaged or corroded wiring/connectors, or issues with the engine control module (ECM).
4. Can I drive my 2006 Toyota Camry with code P2138?
While the car may still be drivable, it could experience reduced performance or enter limp mode. Driving for extended periods without addressing the issue is not recommended.
5. How do I diagnose the P2138 code in my 2006 Camry?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the throttle pedal position sensor, and checking for damaged wiring or poor electrical connections.
6. How do I fix a P2138 code on a Toyota Camry?
Repairs may include replacing the throttle pedal position sensor, repairing or replacing damaged wiring, cleaning corroded connectors, or, in rare cases, reprogramming or replacing the ECM.
7. How much does it cost to repair a P2138 code?
Repair costs depend on the issue but typically range from $100 to $500, with throttle pedal sensor replacement being the most common fix.
8. Can a bad battery trigger the P2138 code?
A weak or failing battery can cause voltage irregularities, potentially contributing to the P2138 code, though it is less common.
9. Will resetting the ECU clear the P2138 code?
Resetting the ECU may temporarily clear the code, but if the underlying issue isn’t resolved, the code will likely return.
10. How can I prevent the P2138 code from occurring?
Regular maintenance, including inspecting the throttle pedal sensor and its wiring for damage or corrosion, can help prevent this code from appearing.
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