AutoCodes – Honda – P0134 2019 Honda CR-V

P0134 2019 Honda CR-V Code - Air/Fuel Ratio Sensor 1 Heater System Malfunction

Quick Answer

The Air/Fuel Ratio (A/F) Sensor (Sensor 1) is activated by warming the element with a heater and by maintaining a steady high temperature to accurately calculate the air/fuel ratio. Common causes include Faulty Air/Fuel Ratio (A/F) Sensor (Sensor 1), A/F Sensor (Sensor 1) harness is open or shorted, A/F Sensor (Sensor 1) circuit poor electrical connection. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.

What it means
P0134 2019 Honda CR-V indicates Air/Fuel Ratio Sensor 1 Heater System Malfunction.
Common causes
Common causes include Faulty Air/Fuel Ratio (A/F) Sensor (Sensor 1), A/F Sensor (Sensor 1) harness is open or shorted, A/F Sensor (Sensor 1) circuit poor electrical connection.
Severity
Moderate - service should be scheduled soon.
Can I drive?
The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
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Code Popularity 685
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Aug 11, 2023
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Code P0134 2019 Honda CR-V Description

The Air/Fuel Ratio (A/F) Sensor (Sensor 1) is activated by warming the element with a heater and by maintaining a steady high temperature to accurately calculate the air/fuel ratio. If the heater does not properly heat the element, the A/F Sensor (Sensor 1) does not activate, and the exhaust emissions deteriorate. The Powertrain Control Module (PCM) monitors the A/F Sensor (Sensor 1) internal resistance.
1. When the A/F Sensor (Sensor 1) does not activate for a set time after the A/F sensor (sensor 1) heater is turned on (with high A/F Sensor (Sensor 1) internal resistance), a malfunction of the A/F sensor (sensor 1) heater is detected, and a Diagnostic Trouble Code (DTC) is stored.
2. When the A/F Sensor (Sensor 1) heater cycles ON and OFF for a set time, and the resistance remains high when the heater is ON, a malfunction of the A/F Sensor (Sensor 1) heater is detected, and a DTC is stored.
OBDII Code P0134 2019 Honda CR-V - Air/Fuel Ratio Sensor 1 Heater System Malfunction - AutoCodes.com
P0134 2019 Honda CR-V Code - Air/Fuel Ratio Sensor 1 Heater System Malfunction

What are the Possible Causes of the DTC P0134 2019 Honda CR-V?

  • Faulty Air/Fuel Ratio (A/F) Sensor (Sensor 1)
  • A/F Sensor (Sensor 1) harness is open or shorted
  • A/F Sensor (Sensor 1) circuit poor electrical connection

How to Fix the DTC P0134 2019 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0134 2019 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 P0134 2019 Honda CR-V code?

Need more information on how to fix the P0134 2019 Honda CR-V code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P0134 2019 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 P0134 2019 Honda CR-V Code

1. What are common symptoms of OBDII code P0134 on a 2019 Honda CR-V?

- Common symptoms include poor fuel economy, rough idling, and a possible decrease in engine performance.

2. What does the OBDII code P0134 indicate on a 2019 Honda CR-V?

- OBDII code P0134 specifically points to an Air/Fuel Ratio Sensor 1 Heater System Malfunction.

3. What are the potential causes of the P0134 code on a 2019 Honda CR-V?

- The code can be triggered by issues such as a faulty air/fuel ratio sensor, damaged sensor wiring, or a blown fuse.

4. How can I diagnose the cause of the P0134 code on my 2019 Honda CR-V?

- Proper diagnosis involves checking the sensor's wiring for damage, inspecting the sensor's heater circuit, and testing the sensor itself for functionality.

5. Can I drive my 2019 Honda CR-V with the P0134 code?

- It is not recommended to drive your vehicle with the P0134 code active, as it can lead to decreased fuel efficiency and potential engine performance issues.

6. How can I repair the Air/Fuel Ratio Sensor 1 Heater System Malfunction on my 2019 Honda CR-V?

- Repair typically involves replacing the faulty air/fuel ratio sensor and ensuring the wiring and connections are in good condition.

7. Are there any DIY tips for fixing the P0134 code on a 2019 Honda CR-V?

- While some may attempt to replace the sensor themselves, it's recommended to consult a professional mechanic for proper diagnosis and repair.

8. Can a blown fuse cause the P0134 code on a 2019 Honda CR-V?

- Yes, a blown fuse in the heater circuit can lead to the P0134 code, so it's important to check and replace any damaged fuses.

9. How much does it cost to repair the Air/Fuel Ratio Sensor 1 Heater System on a 2019 Honda CR-V?

- The cost of repair can vary depending on labor rates and whether you choose to replace the sensor yourself or have a mechanic do the job.

10. Will resetting the OBDII code P0134 on my 2019 Honda CR-V make the problem go away?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying issue causing the P0134 code to appear.

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