P2138 2009 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 2009 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 2009 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 2009 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 2009 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 2009 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 2009 Toyota Camry Code
What does the OBDII code P2138 mean for a 2009 Toyota Camry?
P2138 indicates a voltage correlation issue between the throttle pedal position sensor D and E, suggesting that the signals from these sensors are not matching as expected.
What are the common symptoms of P2138 in a 2009 Toyota Camry?
Common symptoms include reduced engine power, the check engine light illuminating, erratic acceleration, and possible stalling.
What could cause the P2138 code to trigger in my 2009 Toyota Camry?
Causes include faulty throttle pedal position sensors, wiring issues such as shorts or open circuits, or problems with the engine control module (ECM).
How can I diagnose the P2138 code in my Camry?
Begin by using an OBDII scanner to confirm the code. Then, inspect the throttle pedal position sensors and wiring for any visible damage. Testing the sensors' voltage output with a multimeter can also help identify faults.
What repairs are necessary if I have the P2138 code?
Repair options may include replacing the throttle pedal position sensors, repairing or replacing damaged wiring, or reprogramming or replacing the ECM if it is found to be faulty.
Can I drive my 2009 Toyota Camry with the P2138 code?
It is not recommended to drive the vehicle as reduced engine power and erratic throttle response can pose safety risks.
How much does it typically cost to fix the P2138 code?
Repair costs can vary widely, typically ranging from $100 to $500, depending on whether you need to replace sensors, repair wiring, or address ECM issues.
Are there any temporary fixes for P2138 until I can get it repaired?
Clearing the code may temporarily restore normal function, but it is essential to address the underlying issue to prevent the code from reappearing and ensure vehicle safety.
Can other OBDII codes accompany P2138 in a 2009 Toyota Camry?
Yes, it is common to find related codes, such as those for other throttle position or sensor issues, especially if the problem is part of a larger system malfunction.
Discuss the causes and fixes for P2138 2009 Toyota Camry OBDII Code
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