AutoCodes – Honda – P2101 2010 Honda Accord

P2101 2010 Honda Accord Code - Throttle Actuator System Malfunction

Quick Answer

The electronic throttle control system controls the throttle valve opening. Common causes include Faulty Electric Throttle Control (ETC) Actuator, Electric Throttle Control (ETC) Actuator harness is open or shorted, Electric Throttle Control (ETC) 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: P2101 2010 Honda Accord indicates Throttle Actuator System Malfunction.
Common causes: Common causes include Faulty Electric Throttle Control (ETC) Actuator, Electric Throttle Control (ETC) Actuator harness is open or shorted, Electric Throttle Control (ETC) 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 8,732

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 Oct 08, 2019

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P2101 2010 Honda Accord Description

The electronic throttle control system controls the throttle valve opening. The system is composed of the throttle actuator, the throttle valve, throttle position (TP) sensors A and B, the throttle actuator control module, the throttle actuator control module relay, the accelerator pedal position (APP) sensor, and the Engine Control Module (ECM)/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 ECM/PCM to compute the target position. The target position signal is then transmitted to the throttle actuator control module.

The throttle actuator control module determines the throttle valve target position according to the signal received and 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 throttle actuator control module compares the throttle valve target opening angle and the actual throttle valve opening angle from TP sensor A, and when the difference exceeds the specification, the throttle actuator control module transmits the malfunction data to the ECM/PCM. When the ECM/PCM receives the malfunction data from the throttle actuator control module,
the ECM/PCM detects the malfunction of the throttle actuator system and a DTC is stored.

OBDII Code P2101 2010 Honda Accord - Throttle Actuator System Malfunction - AutoCodes.com — P2101 2010 Honda Accord Code - Throttle Actuator System Malfunction

What does this mean?

What are the Possible Causes of the DTC P2101 2010 Honda Accord?

Faulty Electric Throttle Control (ETC) Actuator
Electric Throttle Control (ETC) Actuator harness is open or shorted
Electric Throttle Control (ETC) Actuator circuit poor electrical connection

How to Fix the DTC P2101 2010 Honda Accord?

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 P2101 2010 Honda Accord 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 P2101 2010 Honda Accord Code

1. What does OBDII code P2101 on a 2010 Honda Accord mean?

This code indicates a Throttle Actuator System Malfunction.

2. What are the common symptoms of a Throttle Actuator System Malfunction (P2101) in a 2010 Honda Accord?

Common symptoms include reduced engine power, hesitation or stalling, and the vehicle going into limp mode.

3. What are the possible causes of OBDII code P2101 on a 2010 Honda Accord?

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

4. How can I diagnose the Throttle Actuator System Malfunction (P2101) in my 2010 Honda Accord?

You can diagnose this issue by checking the throttle body for any visible damage, inspecting the wiring and connectors for any signs of wear or corrosion, and using a scan tool to monitor the throttle position sensor readings.

5. How can I repair OBDII code P2101 on my 2010 Honda Accord?

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

6. Can I drive my 2010 Honda Accord with the Throttle Actuator System Malfunction (P2101) code?

It is not recommended to drive your vehicle with this code as it can result in performance issues and potential safety hazards. It's best to address the issue promptly.

7. Will resetting the check engine light fix OBDII code P2101 on my 2010 Honda Accord?

Resetting the check engine light may temporarily clear the code, but it won't fix the underlying issue causing the Throttle Actuator System Malfunction. Proper diagnosis and repair are necessary.

8. How much does it cost to repair OBDII code P2101 on a 2010 Honda Accord?

The cost of repair can vary depending on the exact cause of the issue and the labor rates in your area. It's best to consult a mechanic for an accurate estimate.

9. Can a DIY enthusiast fix OBDII code P2101 on a 2010 Honda Accord?

Depending on your skill level and access to tools, you may be able to address simpler causes like damaged wiring or connectors. However, more complex repairs involving the throttle body or engine control module may require professional assistance.

10. How can I prevent OBDII code P2101 from occurring on my 2010 Honda Accord?

Regular maintenance, such as cleaning the throttle body, checking and replacing air filters, and ensuring proper electrical connections, can help prevent issues that may trigger the Throttle Actuator System Malfunction code.