P0133 Acura 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 Acura 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 Acura 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 Acura?
- 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 Acura?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0133 Acura 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.
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Frequently Asked Questions about P0133 Acura Code
1. What are common symptoms of OBDII code P0133 in an Acura?
The common symptoms of OBDII code P0133 in an Acura include poor fuel economy, rough idling, and a noticeable decrease in engine performance.
2. What can cause the OBDII code P0133 in an Acura?
The OBDII code P0133 in an Acura is typically caused by a malfunctioning or slow response of the Air/Fuel Ratio Sensor 1, also known as the upstream oxygen sensor.
3. How can I diagnose the OBDII code P0133 in my Acura?
To diagnose the OBDII code P0133 in your Acura, you can use an OBDII scanner to read the code and then inspect the Air/Fuel Ratio Sensor 1 for any signs of damage or contamination.
4. Can a dirty air filter trigger the OBDII code P0133 in an Acura?
Yes, a dirty air filter can affect the air/fuel mixture in the engine, which in turn can cause the OBDII code P0133 to be triggered due to improper readings by the Air/Fuel Ratio Sensor 1.
5. What are some repair tips for fixing the OBDII code P0133 in an Acura?
Some repair tips for fixing the OBDII code P0133 in an Acura include cleaning or replacing the Air/Fuel Ratio Sensor 1, checking for exhaust leaks, and ensuring proper air intake system functionality.
6. Is it safe to continue driving my Acura with the OBDII code P0133?
It is not recommended to continue driving your Acura with the OBDII code P0133, as it can lead to further engine damage and worsen fuel efficiency over time.
7. How much does it typically cost to repair the OBDII code P0133 in an Acura?
The cost to repair the OBDII code P0133 in an Acura can vary depending on the specific issue causing the code, but it may range from $100 to $300 for parts and labor.
8. Can a faulty catalytic converter trigger the OBDII code P0133 in an Acura?
Yes, a faulty catalytic converter can affect the readings of the Air/Fuel Ratio Sensor 1, potentially triggering the OBDII code P0133 in an Acura.
9. How often should the Air/Fuel Ratio Sensor 1 be replaced in an Acura?
The Air/Fuel Ratio Sensor 1 in an Acura should typically be replaced every 60,000 to 100,000 miles, or as recommended in the vehicle's maintenance schedule.
10. Will resetting the OBDII code P0133 in my Acura make it go away permanently?
Resetting the OBDII code P0133 in your Acura may temporarily turn off the check engine light, but if the underlying issue causing the code is not addressed, the code is likely to reappear.
Discuss the causes and fixes for P0133 Acura OBDII Code
-
i have replaced both oxygen sensors on my 1998 acura 2.5 tl to solve the code p0133 after the engine light being reset the code came back again.what is next now ?
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If the sensor are OK, the next thing is to check for exhaust leaks or restricted air intake (clogged air filter or damage Mas Air Flow (MAF) sensor)
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