AutoCodes – Honda – P2101 2009 Honda Accord

P2101 2009 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 2009 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 7,690
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Oct 08, 2019
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Code P2101 2009 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 2009 Honda Accord - Throttle Actuator System Malfunction - AutoCodes.com
P2101 2009 Honda Accord Code - Throttle Actuator System Malfunction

What are the Possible Causes of the DTC P2101 2009 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 2009 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 2009 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.

Need more information about the P2101 2009 Honda Accord code?

Need more information on how to fix the P2101 2009 Honda Accord code? Get Access to Factory Service Manuals

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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 2009 Honda Accord Code

1. What are some common symptoms of OBDII code P2101 in a 2009 Honda Accord?

- Common symptoms include engine stalling, rough idling, lack of power, and the vehicle going into limp mode.

2. What does OBDII code P2101 in a 2009 Honda Accord indicate?

- P2101 indicates a Throttle Actuator System Malfunction, often related to issues with the electronic throttle control system.

3. What are the possible causes of OBDII code P2101 in a 2009 Honda Accord?

- The causes can include a faulty throttle body, damaged wiring or connectors, a malfunctioning throttle position sensor, or issues with the electronic control unit (ECU).

4. How can I diagnose the Throttle Actuator System Malfunction in my 2009 Honda Accord?

- Diagnosing P2101 may involve checking the throttle body for any signs of wear or damage, inspecting the wiring and connectors for faults, and using an OBDII scanner to retrieve the error code.

5. Can a dirty throttle body cause OBDII code P2101 in a 2009 Honda Accord?

- Yes, a dirty or clogged throttle body can disrupt the proper functioning of the throttle actuator system and lead to the P2101 error code.

6. What are some repair tips for fixing OBDII code P2101 in a 2009 Honda Accord?

- Repair tips may include cleaning the throttle body, checking and repairing any damaged wiring or connectors, replacing a faulty throttle position sensor, or reprogramming the ECU if necessary.

7. Is it safe to continue driving my 2009 Honda Accord with OBDII code P2101?

- It is not recommended to drive the vehicle with the P2101 code as it can lead to further damage and safety risks. It is best to address the issue promptly.

8. Can resetting the ECU clear OBDII code P2101 in a 2009 Honda Accord?

- Resetting the ECU may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to reappear.

9. How much does it typically cost to repair OBDII code P2101 in a 2009 Honda Accord?

- The cost of repair can vary depending on the specific cause of the issue, but it may range from a simple cleaning of the throttle body to replacing components like the throttle position sensor or ECU.

10. Can a DIY enthusiast fix OBDII code P2101 in a 2009 Honda Accord?

- Some aspects of diagnosing and fixing P2101 can be tackled by a DIY enthusiast, such as cleaning the throttle body or checking wiring connections. However, more complex repairs may require professional expertise.

Discuss the causes and fixes for P2101 2009 Honda Accord OBDII Code

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