P2138 Toyota Code - Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
Quick Answer
The Accelerator Pedal Position (APP) sensor is built into the accelerator pedal sensor assembly and has 2 sensor circuits: VPA (main) and VPA2 (sub). Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position 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 Toyota indicates Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation.
- Common causes
- Common causes include Faulty Accelerator Pedal Position (APP) Sensor, Accelerator Pedal Position Sensor harness is open or shorted, Accelerator Pedal Position 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 Toyota Description
The ECM monitors the actual accelerator pedal opening angle (throttle valve opening angle) through the signals from VPA and VPA2 and controls the throttle actuator according to these signals.
When either the output voltage of VPA or VPA2 deviates from the standard range, or the difference between the output voltages of the 2 sensor circuits is more than the threshold, the ECM determines that there is a malfunction in the accelerator pedal position sensor. The ECM then illuminates the MIL and stores a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P2138 Toyota?
- Faulty Accelerator Pedal Position (APP) Sensor
- Accelerator Pedal Position Sensor harness is open or shorted
- Accelerator Pedal Position Sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P2138 Toyota?
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 Toyota 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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Information for Specific Toyota Models
- P2138 2006 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2007 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2008 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2009 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2010 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2011 Toyota Camry — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2001 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2002 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2003 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2004 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2005 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2006 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2007 Toyota Highlander — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2013 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2014 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2015 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2016 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2017 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
- P2138 2018 Toyota RAV4 — Throttle Pedal Position Sensor/Switch 'D'/'E' Voltage Correlation
Frequently Asked Questions about P2138 Toyota Code
1. What are the common symptoms of OBDII code P2138 in a Toyota?
- Common symptoms include reduced engine power, hesitation or stalling when accelerating, and illuminated Check Engine Light.
2. What does the OBDII code P2138 in a Toyota indicate?
- The code P2138 indicates an issue with the correlation between the voltage signals of the throttle pedal position sensor and throttle position sensor.
3. What are some possible causes of OBDII code P2138 in a Toyota?
- Possible causes include a faulty throttle pedal position sensor, malfunctioning throttle position sensor, wiring issues, or a problem with the engine control module.
4. Can a dirty throttle body cause OBDII code P2138 in a Toyota?
- Yes, a dirty throttle body can disrupt the proper functioning of the throttle control system and potentially trigger code P2138. Cleaning the throttle body may help resolve the issue.
5. How can I diagnose and repair OBDII code P2138 in my Toyota?
- Diagnosis involves checking the throttle pedal position sensor, throttle position sensor, and their wiring for faults. Repair may involve replacing the faulty sensors or repairing/replacing damaged wiring.
6. Is it safe to drive with OBDII code P2138 in a Toyota?
- It is not recommended to drive with code P2138 as it can cause performance issues and potentially lead to dangerous driving conditions. It is best to address the issue promptly.
7. Can resetting the ECU clear OBDII code P2138 in a Toyota?
- Resetting the ECU may temporarily clear the code, but if the underlying issue causing P2138 is not addressed, the code is likely to reappear once the system detects the problem again.
8. How much does it typically cost to repair OBDII code P2138 in a Toyota?
- The cost of repairing code P2138 can vary depending on the specific cause of the issue. Costs may include sensor replacement, wiring repairs, or potential labor charges.
9. Are there any DIY fixes for OBDII code P2138 in a Toyota?
- DIY fixes for P2138 may include cleaning the throttle body, checking and tightening electrical connections, or visually inspecting the sensors for any obvious damage before seeking professional help.
10. Can OBDII code P2138 cause permanent damage to the vehicle if left unaddressed?
- Continuing to drive with code P2138 can potentially cause further damage to the engine or other components of the throttle control system. It is important to address the issue promptly to prevent any long-term damage.
Discuss the causes and fixes for P2138 Toyota OBDII Code
-
03 toyota tundra 4,7 i step on the gas pedal and the truck wont respond my accelerator wont respond can some one help me please
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The Accelerator Pedal Position (APP) Sensor may have to be replace to fix the problem.
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