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Engine-Codes – Honda – P0122 2021 Honda CR-V

P0122 2021 Honda CR-V Code - Throttle Position Sensor 'A' Circuit Low Voltage

Quick Answer

The P0122 code on a 2021 Honda CR-V indicates a problem with the Throttle Position Sensor (TPS) 'A' circuit, specifically reporting low voltage. Common causes include Faulty Throttle Position Sensor (TPS), Damaged wiring or connectors in the TPS circuit, Corrosion or poor electrical connections in the TPS system. 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
P0122 2021 Honda CR-V indicates Throttle Position Sensor 'A' Circuit Low Voltage.
Common causes
Common causes include Faulty Throttle Position Sensor (TPS), Damaged wiring or connectors in the TPS circuit, Corrosion or poor electrical connections in the TPS system.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 13, 2024
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Code P0122 2021 Honda CR-V Description

The P0122 code on a 2021 Honda CR-V indicates a problem with the Throttle Position Sensor (TPS) 'A' circuit, specifically reporting low voltage. The TPS is a crucial component of the vehicle's electronic throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). The ECM uses this data to determine the appropriate air-fuel mixture for optimal engine performance.

OBDII Code P0122 2021 Honda CR-V - Throttle Position Sensor 'A' Circuit Low Voltage
P0122 2021 Honda CR-V Code - Throttle Position Sensor 'A' Circuit Low Voltage

Common Causes of P0122 2021 Honda CR-V

  1. Faulty Throttle Position Sensor (TPS).
  2. Damaged wiring or connectors in the TPS circuit.
  3. Corrosion or poor electrical connections in the TPS system.
  4. Issues with the ECM receiving and interpreting TPS signals.
  5. Environmental factors such as moisture or debris affecting TPS functionality.

Symptoms of P0122 2021 Honda CR-V

  1. Poor acceleration or hesitation when pressing the throttle pedal.
  2. Rough idling or engine stalling.
  3. Reduced engine power or limited speed capability.
  4. Check Engine Light illuminated on the dashboard.
  5. Difficulty starting the engine or erratic engine behavior.

How to Fix P0122 2021 Honda CR-V

  1. Begin by conducting a thorough diagnostic scan to confirm the P0122 code and identify the specific cause of the low voltage reading.
  2. Inspect the Throttle Position Sensor (TPS) for any visible damage or wear, and test its functionality using a multimeter.
  3. Check the wiring and connectors in the TPS circuit for any signs of damage, corrosion, or poor connections. Repair or replace as needed.
  4. Clear the fault code from the ECM memory and perform a test drive to ensure that the issue has been resolved.
  5. If the problem persists, consider replacing the TPS or consulting a professional mechanic for further diagnosis and repair.

Cost to Fix P0122 2021 Honda CR-V

The typical repair costs for addressing a Throttle Position Sensor 'A' Circuit Low Voltage issue on a 2021 Honda CR-V can vary depending on the specific cause of the problem and the parts/labour required for the repair. In general, replacing a faulty TPS can cost between $100 and $300, while addressing wiring or connector issues may range from $50 to $150. Overall, the total repair cost for this issue could range from $150 to $500, including parts and labour.

What does this mean?

Tech Notes for P0122 2021 Honda CR-V









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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 P0122 2021 Honda CR-V Code

1. What are the common symptoms of OBDII code P0122 in a 2021 Honda CR-V?

- Common symptoms include poor acceleration, lack of power, rough idling, and potential stalling of the vehicle.

2. What does the OBDII code P0122 'Throttle Position Sensor 'A' Circuit Low Voltage' mean for my 2021 Honda CR-V?

- This code indicates that the vehicle's engine control module has detected a low voltage signal from the throttle position sensor 'A'.

3. What are the possible causes of the P0122 code in a 2021 Honda CR-V?

- The code can be triggered by a faulty throttle position sensor, damaged wiring or connectors, a failing engine control module, or issues with the throttle body.

4. How can I diagnose the cause of the P0122 code in my 2021 Honda CR-V?

- Diagnosing the issue may involve checking the throttle position sensor's voltage, inspecting wiring for damage, and scanning the vehicle's computer for related error codes.

5. Can I continue driving my 2021 Honda CR-V with the P0122 code?

- It is not recommended to drive the vehicle with the P0122 code active, as it can lead to poor performance and potential safety hazards.

6. Is it possible to repair the P0122 code in a 2021 Honda CR-V myself?

- While some DIY enthusiasts may attempt to replace the throttle position sensor, it is advisable to consult a professional mechanic for an accurate diagnosis and repair.

7. How much does it typically cost to repair the P0122 code in a 2021 Honda CR-V?

- The cost of repairing the P0122 code can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

8. Can a faulty throttle position sensor cause other issues besides triggering the P0122 code?

- Yes, a faulty throttle position sensor can lead to poor fuel efficiency, erratic shifting in automatic transmissions, and overall drivability issues.

9. Are there any preventive maintenance tips to avoid the P0122 code in my 2021 Honda CR-V?

- Regularly inspecting and cleaning the throttle body, checking for any signs of wiring damage, and ensuring proper maintenance of the vehicle can help prevent issues with the throttle position sensor.

10. Will resetting the OBDII code P0122 in my 2021 Honda CR-V make it go away permanently?

- Resetting the code may temporarily clear the warning light, but if the underlying issue causing the code is not addressed, it is likely to return.

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