AutoCodes – Subaru – P2135 Subaru

P2135 Subaru Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

Quick Answer

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor 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
P2135 Subaru indicates Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation.
Common causes
Common causes include Faulty electric throttle control actuator (TP sensor 1 and 2), Throttle Position Sensor harness is open or shorted, Throttle Position Sensor circuit poor 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 19,003
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P2135 Subaru Description

Electric throttle control actuator consists of throttle control motor, throttle position sensor, etc. The throttle position sensor responds to the throttle valve movement.

The throttle position sensor has the two sensors. These sensors are a kind of potentiometers which transform the throttle valve position into output voltage, and emit the voltage signal to the Engine Control Module (ECM). In addition, these sensors detect the opening and closing speed of the throttle valve and feed the voltage signals to the ECM. The ECM judges the current opening angle of the throttle valve from these signals and the ECM controls the throttle control motor to make the throttle valve opening angle properly in response to driving condition.
OBDII Code P2135 Subaru - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation - AutoCodes.com
P2135 Subaru Code - Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation

What are the Possible Causes of the DTC P2135 Subaru?

  • Faulty electric throttle control actuator (TP sensor 1 and 2)
  • Throttle Position Sensor harness is open or shorted
  • Throttle Position Sensor circuit poor connection
  • Faulty accelerator pedal position sensor

How to Fix the DTC P2135 Subaru?

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 P2135 Subaru 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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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P2135 Subaru Code

1. What are the common symptoms of OBDII code P2135 in a Subaru related to the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation?

- Common symptoms include rough idling, stalling, lack of power, and the vehicle going into "limp mode" where it operates at reduced performance.

2. What are the possible causes of OBDII code P2135 in a Subaru?

- The code P2135 can be triggered by issues such as a faulty throttle position sensor, pedal position sensor, wiring problems, or a malfunctioning electronic throttle control system.

3. How can I diagnose the Throttle/Pedal Position Sensor/Switch 'A'/'B' Voltage Correlation issue in a Subaru?

- Diagnosing this problem typically involves using a scan tool to read the OBDII code, checking the sensor readings with a multimeter, and inspecting the wiring for any signs of damage or corrosion.

4. Can I drive my Subaru with OBDII code P2135 present?

- It is not recommended to drive your Subaru with code P2135 present, as the symptoms associated with this issue can affect the vehicle's performance and safety. It is best to address the problem promptly.

5. How can I repair OBDII code P2135 in my Subaru?

- Repairing code P2135 may involve replacing the faulty throttle position sensor, pedal position sensor, or repairing any damaged wiring. It is advisable to consult a professional mechanic for an accurate diagnosis and repair.

6. Is it necessary to reset the OBDII code P2135 in a Subaru after repairing the issue?

- Yes, it is recommended to clear the OBDII code P2135 after repairing the underlying problem. This can be done using a scan tool or by disconnecting the car's battery for a few minutes.

7. Can a dirty throttle body cause OBDII code P2135 in a Subaru?

- While a dirty throttle body can lead to performance issues, it is not a common cause of code P2135. It is essential to focus on checking the throttle and pedal position sensors first.

8. How much does it cost to repair OBDII code P2135 in a Subaru?

- The cost of repairing code P2135 can vary depending on the root cause of the issue, the parts needed, and labor costs. It is recommended to obtain estimates from different repair shops.

9. Will OBDII code P2135 cause permanent damage to my Subaru if left unaddressed?

- Ignoring OBDII code P2135 can potentially cause further damage to the throttle control system and affect the vehicle's drivability. It is advisable to address the issue promptly to prevent any long-term damage.

10. Can I prevent OBDII code P2135 in my Subaru?

- To prevent code P2135, it is essential to perform regular maintenance on your Subaru, including checking and cleaning throttle components, inspecting wiring for damage, and addressing any issues promptly to prevent them from escalating.

Discuss the causes and fixes for P2135 Subaru OBDII Code

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