Engine-Codes.com
Engine-Codes – Honda – P0121 2018 Honda CR-V

P0121 2018 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

Quick Answer

The P0121 diagnostic trouble code (DTC) for a 2018 Honda CR-V indicates that the Throttle Position Sensor 'A' is out of range. Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors, Dirty throttle body. 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
P0121 2018 Honda CR-V indicates Throttle Position Sensor 'A' Out of Range.
Common causes
Common causes include Faulty throttle position sensor, Damaged or corroded wiring/connectors, Dirty throttle body.
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 17, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code P0121 2018 Honda CR-V Description

The P0121 diagnostic trouble code (DTC) for a 2018 Honda CR-V indicates that the Throttle Position Sensor 'A' is out of range. The throttle position sensor (TPS) is a crucial component of the vehicle's electronic fuel injection system, responsible for monitoring the position of the throttle valve and sending this information to the engine control unit (ECU). When the TPS is out of range, it means that the signal being sent to the ECU does not align with the expected values, leading to potential issues with engine performance, fuel efficiency, and overall drivability.

OBDII Code P0121 2018 Honda CR-V - Throttle Position Sensor 'A' Out of Range
P0121 2018 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

Common Causes of P0121 2018 Honda CR-V

  1. Faulty throttle position sensor
  2. Damaged or corroded wiring/connectors
  3. Dirty throttle body
  4. Malfunctioning engine control unit (ECU)
  5. Environmental factors such as moisture or debris affecting sensor performance

Symptoms of P0121 2018 Honda CR-V

  1. Rough idling or erratic engine behavior
  2. Hesitation or lack of response during acceleration
  3. Reduced fuel efficiency
  4. Stalling or difficulty starting the engine
  5. Illumination of the Check Engine Light

How to Fix P0121 2018 Honda CR-V

  1. Begin by conducting a thorough diagnostic scan to confirm the P0121 code and identify the specific cause of the issue.
  2. Inspect the throttle position sensor, wiring, and connectors for any visible damage or corrosion. Replace any faulty components as needed.
  3. Clean the throttle body to remove any carbon buildup or debris that may be affecting sensor performance.
  4. Reset the ECU to clear the code and recalibrate the throttle position sensor.
  5. Test drive the vehicle to ensure the issue has been resolved and the code does not reappear.

Cost to Fix P0121 2018 Honda CR-V

The typical repair costs for addressing a P0121 code on a 2018 Honda CR-V can vary depending on the specific cause of the issue and the labor rates in your area. On average, you can expect to pay between $150 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to obtain quotes from multiple sources to ensure you're getting a fair price for the repair.

What does this mean?

Tech Notes for P0121 2018 Honda CR-V









User Submitted Video

Need more information about the P0121 2018 Honda CR-V code?

Need more information on how to fix the P0121 2018 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0121 2018 Honda CR-V code diagnosed by a professional: Find a repair shop in your area

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 P0121 2018 Honda CR-V Code

1. What does OBDII code P0121 on a 2018 Honda CR-V indicate?

Code P0121 indicates that the Throttle Position Sensor 'A' is out of range on the 2018 Honda CR-V.

2. What are the common symptoms of a Throttle Position Sensor 'A' out of range issue on a 2018 Honda CR-V?

Common symptoms include poor acceleration, rough idling, stalling, and potential issues with the vehicle's transmission shifting smoothly.

3. What are the potential causes of OBDII code P0121 on a 2018 Honda CR-V?

Possible causes include a faulty throttle position sensor, wiring issues, a dirty throttle body, or a problem with the vehicle's electronic control module.

4. How can I diagnose the Throttle Position Sensor 'A' out of range issue on my 2018 Honda CR-V?

You can use an OBDII scanner to read the trouble code, check the throttle position sensor's voltage with a multimeter, and inspect the wiring for any visible damage.

5. Can I drive my 2018 Honda CR-V with OBDII code P0121?

It is not recommended to drive your vehicle with code P0121 as it can lead to poor performance and potential safety hazards. It's best to address the issue promptly.

6. How can I repair OBDII code P0121 on my 2018 Honda CR-V?

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

7. Is it possible to reset OBDII code P0121 on a 2018 Honda CR-V without fixing the underlying issue?

Resetting the code without addressing the root cause will only temporarily clear the check engine light. The issue will likely reoccur until properly repaired.

8. Will a Throttle Position Sensor 'A' out of range problem impact my 2018 Honda CR-V's fuel efficiency?

Yes, a malfunctioning throttle position sensor can affect fuel efficiency by causing the engine to run inefficiently or by affecting the transmission's shifting patterns.

9. Can a DIY enthusiast fix OBDII code P0121 on a 2018 Honda CR-V?

Depending on the individual's skill level, a DIY enthusiast may be able to diagnose and repair the issue. However, complex repairs or reprogramming may require professional assistance.

10. How much can I expect to pay to repair OBDII code P0121 on my 2018 Honda CR-V?

The cost of repairs for code P0121 can vary depending on the exact cause of the issue and whether you choose to perform the repairs yourself or take your vehicle to a professional mechanic.

Discuss the causes and fixes for P0121 2018 Honda CR-V OBDII Code

Submit a New Comment

Code P0121 2018 Honda CR-V comments

No comments found for this page.