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Engine-Codes – Honda – P0123 2021 Honda CR-V

P0123 2021 Honda CR-V Code - Throttle Position Sensor 'A' Circuit High Voltage

Quick Answer

The P0123 code for a 2021 Honda CR-V indicates a problem with the Throttle Position Sensor (TPS) 'A' Circuit High Voltage. Common causes include Faulty throttle position sensor, Wiring issues such as a short circuit or open circuit, Corroded electrical connector. 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
P0123 2021 Honda CR-V indicates Throttle Position Sensor 'A' Circuit High Voltage.
Common causes
Common causes include Faulty throttle position sensor, Wiring issues such as a short circuit or open circuit, Corroded electrical connector.
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 12, 2024
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Code P0123 2021 Honda CR-V Description

The P0123 code for a 2021 Honda CR-V indicates a problem with the Throttle Position Sensor (TPS) 'A' Circuit High Voltage. The throttle position sensor is a crucial component of the engine management system, as it monitors the position of the throttle pedal and sends signals to the engine control unit (ECU) to adjust fuel injection and ignition timing. When the TPS 'A' circuit reports high voltage, it means that the voltage signal being sent to the ECU is above the specified range, indicating a potential issue with the sensor or its circuitry.

OBDII Code P0123 2021 Honda CR-V - Throttle Position Sensor 'A' Circuit High Voltage
P0123 2021 Honda CR-V Code - Throttle Position Sensor 'A' Circuit High Voltage

Common Causes of P0123 2021 Honda CR-V

  1. Faulty throttle position sensor
  2. Wiring issues such as a short circuit or open circuit
  3. Corroded electrical connector
  4. Problem with the engine control unit (ECU)

Symptoms of P0123 2021 Honda CR-V

  1. Engine misfires or hesitation during acceleration
  2. Rough idling or stalling
  3. Reduced fuel efficiency
  4. Check Engine light illuminated on the dashboard

How to Fix P0123 2021 Honda CR-V

  1. Begin by diagnosing the issue using a scan tool to verify the P0123 code and identify the specific cause.
  2. Inspect the throttle position sensor and wiring for any visible damage, corrosion, or loose connections.
  3. Test the throttle position sensor using a multimeter to check for proper voltage output and resistance.
  4. Replace the throttle position sensor if it is determined to be faulty, ensuring proper installation and calibration.
  5. Clear the codes from the ECU and test drive the vehicle to confirm that the issue has been resolved.

Cost to Fix P0123 2021 Honda CR-V

The typical repair costs for addressing a Throttle Position Sensor 'A' Circuit High Voltage issue can range from $100 to $300, including parts and labor. However, specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

What does this mean?

Tech Notes for P0123 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 P0123 2021 Honda CR-V Code

1. What are the common symptoms of OBDII code P0123 in a 2021 Honda CR-V?

- Common symptoms include issues with acceleration, poor throttle response, stalling, and in some cases, the Check Engine Light may illuminate.

2. What does the OBDII code P0123 'Throttle Position Sensor 'A' Circuit High Voltage' mean for a 2021 Honda CR-V?

- This code indicates that the throttle position sensor is detecting a higher voltage signal than normal, potentially leading to incorrect throttle position readings.

3. What are the possible causes of OBDII code P0123 in a 2021 Honda CR-V?

- The causes can range from a malfunctioning throttle position sensor, wiring or connector issues, a faulty powertrain control module (PCM), or even a problem with the throttle body itself.

4. How can I diagnose the cause of OBDII code P0123 in my 2021 Honda CR-V?

- Diagnosing this code typically involves checking the throttle position sensor's voltage readings, inspecting the sensor's wiring and connectors for damage, and testing the PCM for any faults.

5. Can I still drive my 2021 Honda CR-V with OBDII code P0123 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to poor performance, potential stalling, and other safety concerns.

6. How can I repair OBDII code P0123 in my 2021 Honda CR-V?

- Repair options may include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, resetting the PCM, or seeking assistance from a qualified mechanic for a thorough diagnosis and fix.

7. Are there any DIY tips for addressing OBDII code P0123 in a 2021 Honda CR-V?

- DIY enthusiasts with the necessary skills and tools can attempt to inspect the throttle position sensor, its wiring, and connectors for visible issues before considering replacement or further diagnostics.

8. Will resetting the Check Engine Light resolve OBDII code P0123 in a 2021 Honda CR-V?

- Resetting the Check Engine Light may temporarily clear the code, but if the underlying issue causing P0123 is not addressed, the code is likely to reappear once the problem is detected again.

9. How much does it typically cost to repair OBDII code P0123 in a 2021 Honda CR-V?

- The repair cost can vary depending on the exact cause of the code and the labor rates in your area. Replacing the throttle position sensor alone can cost anywhere from $100 to $300, not including labor.

10. Can OBDII code P0123 in a 2021 Honda CR-V cause permanent damage if left unaddressed?

- Continuing to drive with this code present can potentially cause further damage to the engine or other components over time, making it important to address the issue promptly to avoid costly repairs down the line.

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