AutoCodes – Honda – P2135 Honda

P2135 Honda Code - Throttle Position Sensor 'A'/'B' Voltage Incorrect Correlation

Quick Answer

The Electronic Throttle Control System (ETCS) controls the throttle valve opening. Common causes include Faulty Throttle Actuator, Throttle Actuator harness is open or shorted, Throttle Actuator 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: P2135 Honda indicates Throttle Position Sensor 'A'/'B' Voltage Incorrect Correlation.
Common causes: Common causes include Faulty Throttle Actuator, Throttle Actuator harness is open or shorted, Throttle Actuator 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.

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Code Popularity 38,150

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2135 Honda Description

The Electronic Throttle Control System (ETCS) controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, Throttle Position (TP) sensors A and B, the Accelerator Pedal Position (APP) sensor, and the Powertrain Control Module (PCM). The APP sensor is operated via the throttle cable to determine the accelerator opening value when the driver presses the accelerator pedal. The accelerator pedal opening value is converted to a signal in the APP sensor and transmitted to the PCM to compute the target position. The PCM then operates the throttle actuator to move the throttle valve to the target position. The actual throttle valve position is determined by TP sensor A (installed in the throttle body). The PCM compares the voltages and the throttle valve positions of TP sensor A and TP sensor B. If the difference of the voltages or the throttle valve positions is a certain value or less for a set time, the PCM detects a malfunction in the relationship between TP sensor A and TP sensor B, and stores a Diagnostic Trouble Code (DTC).

OBDII Code P2135 Honda - Throttle Position Sensor 'A'/'B' Voltage Incorrect Correlation - AutoCodes.com — P2135 Honda Code - Throttle Position Sensor 'A'/'B' Voltage Incorrect Correlation

What does this mean?

What are the Possible Causes of the DTC P2135 Honda?

Faulty Throttle Actuator
Throttle Actuator harness is open or shorted
Throttle Actuator circuit poor electrical connection

How to Fix the DTC P2135 Honda?

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 Honda 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 Honda Models

P2135 2008 Honda Accord — Throttle Position Sensor 1/2 Incorrect Voltage Correlation
P2135 2009 Honda Accord — Throttle Position Sensor 1/2 Incorrect Voltage Correlation
P2135 2010 Honda Accord — Throttle Position Sensor 1/2 Incorrect Voltage Correlation

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 Honda Code

1. What are the common symptoms of OBDII code P2135 in a Honda vehicle?

- Common symptoms include a check engine light, reduced engine power, rough idle, hesitation or stalling, and throttle response issues.

2. What does the OBDII code P2135 in a Honda mean?

- OBDII code P2135 indicates that there is an incorrect correlation between the voltage signals of the throttle position sensor 'A' and throttle position sensor 'B'.

3. What are the possible causes of OBDII code P2135 in a Honda?

- Possible causes include a faulty throttle position sensor, damaged wiring or connectors, issues with the throttle body, or a problem with the engine control module.

4. How can I diagnose the cause of OBDII code P2135 in my Honda?

- Diagnosing the issue typically involves checking the throttle position sensor readings using a scan tool, inspecting the wiring and connectors for damage, and testing the throttle body for proper operation.

5. Can driving with OBDII code P2135 in a Honda cause further damage?

- Continuously driving with this code can potentially cause further damage to the engine or other components, so it's recommended to address the issue promptly.

6. Is it safe to continue driving my Honda with OBDII code P2135?

- It is not recommended to continue driving the vehicle with this code as it can lead to performance issues and potentially unsafe driving conditions.

7. How can I repair OBDII code P2135 in my Honda?

- Repair options may include replacing the faulty throttle position sensor, repairing damaged wiring or connectors, cleaning or replacing the throttle body, or reprogramming the engine control module.

8. Can I reset OBDII code P2135 in my Honda using an OBDII scanner?

- Yes, you can reset the code using an OBDII scanner, but it is important to address the underlying issue causing the code to prevent it from reoccurring.

9. How much does it typically cost to fix OBDII code P2135 in a Honda?

- The cost of repairs for this code can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

10. Are there any preventive maintenance tips to avoid OBDII code P2135 in a Honda?

- To prevent OBDII code P2135, it's recommended to follow the manufacturer's recommended maintenance schedule, regularly inspect and clean the throttle body, and address any sensor or wiring issues promptly.