P0133 2021 Honda CR-V Code - Air/Fuel Ratio Sensor 1 Malfunction/Slow Response
Quick Answer
The Air/Fuel Ratio (A/F) Sensor (Sensor 1) is responsible for measuring the oxygen concentration in the exhaust gas and providing this information to the Powertrain Control Module (PCM). 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
- P0133 2021 Honda CR-V indicates Air/Fuel Ratio Sensor 1 Malfunction/Slow Response.
- 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.
Code P0133 2021 Honda CR-V Description
The A/F Sensor (Sensor 1) has a linear signal output in relation to the oxygen concentration. This means that the higher the oxygen concentration in the exhaust gas, the higher the voltage output from the sensor. The PCM converts this voltage output to an air/fuel ratio value, which it then uses to adjust the fuel mixture in the engine.
The PCM also compares the response characteristics of the A/F Sensor (Sensor 1) to a set of predetermined values. If the sensor's response is outside of these predetermined values, the PCM will store a Diagnostic Trouble Code (DTC).
What are the Possible Causes of the DTC P0133 2021 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 P0133 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0133 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 P0133 2021 Honda CR-V code?
Need more information on how to fix the P0133 2021 Honda CR-V code? Get Access to Factory Service Manuals
Need Help with the Code?
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Frequently Asked Questions about P0133 2021 Honda CR-V Code
1. What are the common symptoms of OBDII code P0133 in a 2021 Honda CR-V?
- Common symptoms include poor fuel economy, rough idling, engine hesitation, and an illuminated check engine light.
2. What does the OBDII code P0133 on a 2021 Honda CR-V indicate?
- The code P0133 indicates a malfunction or slow response from Air/Fuel Ratio Sensor 1, also known as the upstream oxygen sensor.
3. What are the potential causes of the P0133 code in a 2021 Honda CR-V?
- Potential causes include a faulty air/fuel ratio sensor, wiring issues, exhaust leaks, engine misfires, or a rich or lean fuel mixture.
4. How can I diagnose the P0133 code in my 2021 Honda CR-V?
- Diagnosing the P0133 code involves checking the oxygen sensor's wiring, inspecting for exhaust leaks, and using a scan tool to monitor sensor readings.
5. Can a dirty air filter cause the P0133 code in a 2021 Honda CR-V?
- Yes, a dirty air filter can affect the air/fuel mixture and potentially trigger the P0133 code by causing the engine to run rich or lean.
6. How should I repair the P0133 code in my 2021 Honda CR-V?
- Repairing the P0133 code may involve replacing the Air/Fuel Ratio Sensor 1, repairing wiring issues, fixing exhaust leaks, or addressing any underlying engine problems.
7. Is it safe to continue driving with the P0133 code in a 2021 Honda CR-V?
- While the vehicle may still be operable with the P0133 code, it is recommended to address the issue promptly to prevent potential damage to the engine or catalytic converter.
8. Can I reset the check engine light after fixing the P0133 code in my 2021 Honda CR-V?
- Yes, once the underlying issue causing the P0133 code is resolved, you can reset the check engine light using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes.
9. Will the P0133 code affect the emissions testing of my 2021 Honda CR-V?
- Yes, the P0133 code can cause the vehicle to fail emissions testing since it indicates a problem with the air/fuel ratio sensor, which is crucial for controlling emissions.
10. How often should the Air/Fuel Ratio Sensor 1 be replaced in a 2021 Honda CR-V?
- The Air/Fuel Ratio Sensor 1 should typically be replaced every 60,000 to 100,000 miles or as recommended in the vehicle's maintenance schedule to ensure optimal performance.
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