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P0121 2019 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

Quick Answer

The P0121 diagnostic trouble code (DTC) for a 2019 Honda CR-V indicates that the Throttle Position Sensor 'A' is out of range. Common causes include Worn or faulty throttle position sensor, Damaged or corroded wiring harness, Incorrect TPS adjustment. 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 2019 Honda CR-V indicates Throttle Position Sensor 'A' Out of Range.
Common causes
Common causes include Worn or faulty throttle position sensor, Damaged or corroded wiring harness, Incorrect TPS adjustment.
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 16, 2024
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Code P0121 2019 Honda CR-V Description

The P0121 diagnostic trouble code (DTC) for a 2019 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 throttle control system, responsible for monitoring the position of the throttle pedal and sending this information to the engine control module (ECM). When the TPS is out of range, it means that the sensor is providing incorrect or erratic voltage signals to the ECM, which can lead to various performance issues.

OBDII Code P0121 2019 Honda CR-V - Throttle Position Sensor 'A' Out of Range
P0121 2019 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

Common Causes of P0121 2019 Honda CR-V

  1. Worn or faulty throttle position sensor
  2. Damaged or corroded wiring harness
  3. Incorrect TPS adjustment
  4. Faulty ECM
  5. Environmental factors such as moisture or debris affecting sensor operation

Symptoms of P0121 2019 Honda CR-V

  1. Rough idling or stalling
  2. Poor acceleration or hesitation
  3. Reduced fuel efficiency
  4. Check Engine Light illuminated
  5. Limp mode activation (limited speed and drivability)

How to Fix P0121 2019 Honda CR-V

  1. Diagnose the issue by using a scan tool to confirm the P0121 code and perform a visual inspection of the TPS and wiring.
  2. Replace the throttle position sensor if it is found to be faulty or out of range.
  3. Inspect and repair any damaged wiring or connectors related to the TPS.
  4. Reset the ECM and perform a throttle relearn procedure to ensure proper calibration.
  5. Test drive the vehicle to verify that the issue has been resolved and the code does not return.

Cost to Fix P0121 2019 Honda CR-V

The typical repair costs for addressing a P0121 code on a 2019 Honda CR-V can vary depending on the specific cause of the issue. In general, replacing a throttle position sensor can range from $100 to $300, including parts and labor. However, if additional repairs or diagnostic work are required, the total cost may increase. It is recommended to consult with a qualified mechanic or auto repair shop for a more accurate estimate based on the specific circumstances of the vehicle. Keep in mind that labor rates can vary, so it's advisable to check local rates for a more precise cost estimate.

What does this mean?

Tech Notes for P0121 2019 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 P0121 2019 Honda CR-V Code

1. What are the common symptoms of OBDII code P0121 (Throttle Position Sensor 'A' Out of Range) in a 2019 Honda CR-V?

The common symptoms include rough idling, poor acceleration, stalling, and possible issues with the vehicle's transmission shifting smoothly.

2. What are the main causes of OBDII code P0121 in a 2019 Honda CR-V?

The main causes of this code are usually a faulty throttle position sensor, a damaged wiring harness, or a poor electrical connection to the sensor.

3. How can I diagnose the Throttle Position Sensor 'A' Out of Range issue on my 2019 Honda CR-V?

You can diagnose this issue by using an OBDII scanner to read the trouble code, checking the throttle position sensor's voltage output, and inspecting the sensor's wiring for any signs of damage or corrosion.

4. Is it safe to continue driving my 2019 Honda CR-V with OBDII code P0121?

It is not recommended to drive your vehicle with this code as it can lead to poor engine performance and potentially cause further damage to the engine or transmission.

5. Can I reset the OBDII code P0121 in my 2019 Honda CR-V by disconnecting the battery?

While disconnecting the battery may temporarily clear the code, it is not a permanent solution. It's crucial to address the underlying issue causing the code to prevent it from reoccurring.

6. How much does it typically cost to repair OBDII code P0121 in a 2019 Honda CR-V?

The cost of repairing this code can vary depending on the root cause. Replacing a faulty throttle position sensor can cost between $100 to $300, while fixing a wiring issue may range from $50 to $200.

7. Can I replace the throttle position sensor in my 2019 Honda CR-V myself?

Replacing the throttle position sensor can be a DIY project for those with mechanical skills and the right tools. However, it's recommended to consult a professional if you're unsure about the process.

8. Will OBDII code P0121 cause my 2019 Honda CR-V to fail an emissions test?

Yes, this code can cause your vehicle to fail an emissions test due to the impact it has on engine performance and emissions control systems.

9. How long does it typically take to repair OBDII code P0121 in a 2019 Honda CR-V?

The repair time can vary based on the exact cause of the issue and the technician's efficiency. In general, it can take anywhere from 1 to 3 hours to diagnose and repair this problem.

10. Can a dirty throttle body be a possible cause of OBDII code P0121 in a 2019 Honda CR-V?

Yes, a dirty throttle body can disrupt the sensor's readings and cause the throttle position sensor 'A' to be out of range, triggering the P0121 trouble code. Regular maintenance of the throttle body can help prevent this issue.

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