P0135 Acura Code - Air/Fuel Ratio Sensor 1 Heater Circuit Malfunction
Quick Answer
A heater for the sensor element is embedded in the Air/Fuel Ratio (A/F) Sensor (Sensor 1), and it is controlled by 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
- P0135 Acura indicates Air/Fuel Ratio Sensor 1 Heater Circuit 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.
Code P0135 Acura Description
What are the Possible Causes of the DTC P0135 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 P0135 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 P0135 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 P0135 Acura Code
What does the OBDII code P0135 mean for an Acura?
The P0135 code indicates a malfunction in the heater circuit of the Air/Fuel Ratio Sensor 1, which is located in front of the catalytic converter.
What are the common symptoms of code P0135 in an Acura?
Symptoms may include an illuminated check engine light, increased fuel consumption, poor engine performance, or difficulty passing emissions tests.
What causes the P0135 code to appear in an Acura?
Common causes include a faulty air/fuel ratio sensor, damaged wiring or connectors in the heater circuit, a blown fuse, or a malfunctioning engine control module (ECM).
Can I drive my Acura with the P0135 code?
While the vehicle may still be drivable, ignoring this code can lead to poor fuel efficiency and potential damage to the catalytic converter over time.
How do I diagnose the P0135 code in an Acura?
Diagnosis typically involves checking the air/fuel ratio sensor, inspecting the wiring and connectors for damage, and testing the voltage and resistance of the heater circuit.
Will replacing the air/fuel ratio sensor fix the P0135 code?
Replacing the sensor can often resolve the issue, but it’s important to confirm that the problem isn’t caused by damaged wiring, a blown fuse, or another underlying issue.
How much does it cost to fix the P0135 code on an Acura?
Repair costs can range from $200 to $400 or more, depending on whether the air/fuel ratio sensor needs replacement or if additional wiring repairs are required.
Can a blown fuse cause the P0135 code to trigger?
Yes, a blown fuse in the heater circuit can prevent the air/fuel ratio sensor from functioning properly and trigger the P0135 code.
How can I prevent the P0135 code from reoccurring in my Acura?
Regular maintenance, including inspecting the wiring and connectors for damage and replacing the air/fuel ratio sensor at recommended intervals, can help prevent this issue.
Does clearing the P0135 code with a scanner solve the problem?
Clearing the code will turn off the check engine light temporarily, but the underlying issue must be fixed to prevent the code from returning.
Discuss the causes and fixes for P0135 Acura OBDII Code
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