AutoCodes – Honda – P0121 2021 Honda CR-V

P0121 2021 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

Quick Answer

The electronic throttle control system controls the throttle valve opening. Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body circuit poor electrical connection. 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 2021 Honda CR-V indicates Throttle Position Sensor 'A' Out of Range.
Common causes: Common causes include Faulty Throttle Body, Throttle Body harness is open or shorted, Throttle Body circuit poor electrical connection.
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.

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Code Popularity 269

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 02, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0121 2021 Honda CR-V Description

The electronic throttle control system controls the throttle valve opening. The system includes the throttle actuator, the throttle valve, Throttle Position (TP) sensors 'A' and 'B', the Electronic Throttle Control System (ETCS) control relay, the Accelerator Pedal Position (APP) sensor, and the Powertrain Control Module (PCM). TP Sensor 'A' is a semiconductor type, and it is attached to the throttle body and shaft to determine the throttle valve position. The throttle valve position signal from TP Sensor 'A' is transmitted to the PCM for target position feedback control. If the signal from TP Sensor 'A' is a fixed value for a set time, the PCM detects a TP Sensor 'A' malfunction and stores a Diagnostic Trouble Code (DTC).

OBDII Code P0121 2021 Honda CR-V - Throttle Position Sensor 'A' Out of Range - AutoCodes.com — P0121 2021 Honda CR-V Code - Throttle Position Sensor 'A' Out of Range

What does this mean?

What are the Possible Causes of the DTC P0121 2021 Honda CR-V?

Faulty Throttle Body
Throttle Body harness is open or shorted
Throttle Body circuit poor electrical connection
Faulty Powertrain Control Module (PCM)

How to Fix the DTC P0121 2021 Honda CR-V?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0121 2021 Honda CR-V code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0121 2021 Honda CR-V code?

Need more information on how to fix the P0121 2021 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0121 2021 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 2021 Honda CR-V Code

1. What are the common symptoms of OBDII code P0121 in a 2021 Honda CR-V?

The common symptoms of OBDII code P0121 in a 2021 Honda CR-V include rough idling, poor acceleration, stalling, and a decrease in fuel efficiency.

2. What does the OBDII code P0121 'Throttle Position Sensor 'A' Out of Range' mean for a 2021 Honda CR-V?

The code P0121 indicates that the throttle position sensor 'A' in the 2021 Honda CR-V is sending a signal to the engine control module that is out of the expected range.

3. What are the possible causes of OBDII code P0121 in a 2021 Honda CR-V?

The potential causes of OBDII code P0121 in a 2021 Honda CR-V include a faulty throttle position sensor, a damaged wiring harness, a dirty throttle body, or issues with the engine control module.

4. How can I diagnose OBDII code P0121 in my 2021 Honda CR-V?

Diagnosing OBDII code P0121 in a 2021 Honda CR-V involves using an OBDII scanner to retrieve the code, checking the throttle position sensor's voltage output, inspecting the wiring for any damage, and testing the sensor's resistance.

5. Can I still drive my 2021 Honda CR-V with OBDII code P0121?

It is not recommended to drive your 2021 Honda CR-V with OBDII code P0121 as it can lead to further damage to the engine and decrease overall performance.

6. How can I repair OBDII code P0121 on my 2021 Honda CR-V?

To repair OBDII code P0121 on a 2021 Honda CR-V, you may need to replace the throttle position sensor, repair any damaged wiring, clean the throttle body, or reprogram the engine control module.

7. How much does it cost to fix OBDII code P0121 on a 2021 Honda CR-V?

The cost to fix OBDII code P0121 on a 2021 Honda CR-V 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 DIY enthusiast fix OBDII code P0121 in a 2021 Honda CR-V?

While some experienced DIY enthusiasts may be able to fix OBDII code P0121 in a 2021 Honda CR-V, it is recommended to seek professional help due to the complexity of the repair.

9. How often does OBDII code P0121 occur in a 2021 Honda CR-V?

OBDII code P0121, indicating an issue with the throttle position sensor 'A', can occur sporadically in a 2021 Honda CR-V due to various factors like wear and tear, environmental conditions, and driving habits.

10. Is it safe to clear the OBDII code P0121 without fixing the issue in a 2021 Honda CR-V?

Clearing the OBDII code P0121 without addressing the underlying problem in a 2021 Honda CR-V is not recommended as the issue may persist, leading to potential safety hazards and further damage to the vehicle.