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P0123 2018 Honda CR-V Code - Throttle Position Sensor 'A' Circuit High Voltage

Quick Answer

The P0123 diagnostic trouble code (DTC) for the 2018 Honda CR-V indicates an issue with the Throttle Position Sensor (TPS) 'A' circuit registering high voltage. Common causes include Worn or faulty Throttle Position Sensor, Damaged or corroded wiring/connectors in the TPS circuit, Contamination or debris affecting TPS operation. 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 2018 Honda CR-V indicates Throttle Position Sensor 'A' Circuit High Voltage.
Common causes
Common causes include Worn or faulty Throttle Position Sensor, Damaged or corroded wiring/connectors in the TPS circuit, Contamination or debris affecting TPS operation.
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 14, 2024
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Code P0123 2018 Honda CR-V Description

The P0123 diagnostic trouble code (DTC) for the 2018 Honda CR-V indicates an issue with the Throttle Position Sensor (TPS) 'A' circuit registering high 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). This data is used by the ECM to adjust fuel delivery and ignition timing, optimizing engine performance and efficiency.

OBDII Code P0123 2018 Honda CR-V - Throttle Position Sensor 'A' Circuit High Voltage
P0123 2018 Honda CR-V Code - Throttle Position Sensor 'A' Circuit High Voltage

Common Causes of P0123 2018 Honda CR-V

  1. Worn or faulty Throttle Position Sensor.
  2. Damaged or corroded wiring/connectors in the TPS circuit.
  3. Contamination or debris affecting TPS operation.
  4. ECM software or hardware issues.
  5. Electrical system malfunctions affecting TPS signal.

Symptoms of P0123 2018 Honda CR-V

  1. Rough idling or fluctuating idle speed.
  2. Hesitation or lack of response when accelerating.
  3. Reduced engine power or performance.
  4. Engine stalling or difficulty starting.
  5. Check Engine Light illuminated on the dashboard.

How to Fix P0123 2018 Honda CR-V

  1. Begin by diagnosing the TPS using a scan tool to confirm the high voltage reading.
  2. Inspect the TPS wiring harness and connectors for any damage, corrosion, or loose connections.
  3. Test the TPS using a multimeter to check for proper voltage output.
  4. If the TPS is faulty, replace it with a new OEM or high-quality aftermarket sensor.
  5. Clear the DTC and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0123 2018 Honda CR-V

The typical repair costs for addressing a Throttle Position Sensor 'A' Circuit High Voltage issue on a 2018 Honda CR-V can range from $150 to $300, including parts and labor. However, specific costs may vary depending on the location, dealership rates, and the quality of the replacement parts used. It is advisable to consult with a trusted auto repair shop for a more accurate estimate based on your vehicle's specific needs. Keep in mind that diagnosis time and labor rates can also impact the overall cost of the repair.

What does this mean?

Tech Notes for P0123 2018 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 2018 Honda CR-V Code

1. What are the common symptoms of OBDII code P0123 on a 2018 Honda CR-V?

- Common symptoms include issues with acceleration, poor fuel economy, rough idling, and potential stalling of the vehicle.

2. What does the OBDII code P0123 indicate in a 2018 Honda CR-V?

- The code P0123 indicates a problem with the Throttle Position Sensor 'A' Circuit High Voltage in the 2018 Honda CR-V.

3. What are the potential causes of the Throttle Position Sensor 'A' Circuit High Voltage code on a 2018 Honda CR-V?

- 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 (ECM).

4. How can I diagnose the Throttle Position Sensor 'A' Circuit High Voltage issue on my 2018 Honda CR-V?

- Diagnosing the problem involves checking the throttle position sensor's voltage output, inspecting the wiring and connectors for any damage, and scanning the ECM for error codes.

5. Can I drive my 2018 Honda CR-V with the P0123 code?

- It's not recommended to drive your vehicle with the P0123 code as it can lead to performance issues and potential safety concerns. It's best to get the issue fixed promptly.

6. How can I repair the Throttle Position Sensor 'A' Circuit High Voltage problem on my 2018 Honda CR-V?

- The repair may involve replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, cleaning the throttle body, or reprogramming the ECM.

7. Is it possible to reset the OBDII code P0123 on a 2018 Honda CR-V without fixing the underlying issue?

- While you can clear the code using an OBDII scanner, it's essential to address the root cause of the problem to prevent it from recurring and potentially causing further damage.

8. Will a Throttle Position Sensor 'A' Circuit High Voltage code on a 2018 Honda CR-V affect the vehicle's performance?

- Yes, the code can impact the vehicle's performance by causing issues with acceleration, fuel efficiency, and overall engine operation.

9. How much does it typically cost to repair the Throttle Position Sensor 'A' Circuit High Voltage issue on a 2018 Honda CR-V?

- The repair costs can vary depending on the exact cause of the problem, but it may range from $100 to $300 for parts and labor.

10. Can a DIY enthusiast fix the P0123 code on a 2018 Honda CR-V, or is it best left to a professional mechanic?

- While some DIYers with automotive knowledge and tools may be able to address the issue, it's recommended to consult a professional mechanic to ensure proper diagnosis and repair of the Throttle Position Sensor 'A' Circuit High Voltage problem.

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