P0135 Nissan:HO2S11 Heater Circuit Fault
If you own a Nissan and have been experiencing issues with the P0135 code, then you’re in the right place. This code refers to a problem with the HO2S11 heater circuit, which is responsible for regulating the oxygen sensor’s temperature. If left unaddressed, this issue can lead to decreased fuel efficiency and increased emissions. However, with the right knowledge and tools, fixing this problem is relatively straightforward.
In this article, we’ll discuss what the P0135 code means, what causes it, and how to fix it.
Key Takeaways:
Meaning: P0135 code in Nissan indicates a fault in the HO2S11 heater circuit.
Causes: Faulty oxygen sensor, damaged wiring, blown fuse, or a failed PCM can cause P0135 code in Nissan.
Symptoms: Check Engine Light (CEL) illuminates, poor fuel economy, rough idling, and decreased engine performance are some of the symptoms of P0135 code in Nissan.
Fixes: Repair or replace the faulty oxygen sensor, repair damaged wiring, replace the blown fuse, or replace the failed PCM to fix P0135 code in Nissan.
P0135 Code Nissan Meaning
The P0135 code in a Nissan vehicle indicates a fault in the HO2S11 (Heated Oxygen Sensor 1) circuit. This sensor is responsible for measuring the oxygen content in the exhaust gases and sending this information to the engine control module (ECM). The ECM uses this data to adjust the air/fuel mixture to ensure optimal engine performance and reduce emissions.
When the HO2S11 circuit malfunctions, it can cause a variety of issues such as decreased fuel efficiency, rough idling, and increased emissions. To fix this problem, the faulty sensor or wiring must be identified and replaced or repaired as necessary.
Signs and Symptoms of P0135 Code in Nissan
Here are some of the signs and symptoms of the P0135 code in Nissan:
- Check Engine Light: The most common symptom of the P0135 code is the illumination of the check engine light on the dashboard. This light indicates that there is a problem with the engine or emissions system and requires immediate attention.
- Poor Fuel Economy: A faulty HO2S11 can cause the engine to run rich or lean, which can result in poor fuel economy. The vehicle may also experience a decrease in power and acceleration.
- Increased Emissions: A malfunctioning HO2S11 can cause the vehicle to emit higher levels of pollutants, which can result in a failed emissions test.
- Irregular Idling: The engine may idle roughly or stall when the HO2S11 circuit is malfunctioning. This can be due to the incorrect air-fuel ratio being delivered to the engine.
- Delayed Engine Response: The engine may take longer to respond to throttle inputs when the HO2S11 circuit is faulty. This can result in a sluggish or unresponsive driving experience.
P0135 Code Nissan:
Here are some of the possible causes of the P0135 code:
- Faulty oxygen sensor: The most common cause of the P0135 code is a faulty oxygen sensor. The oxygen sensor is responsible for measuring the amount of oxygen in the exhaust and sending that information to the engine control module (ECM). If the sensor is faulty, it can cause the heater circuit to malfunction.
- Wiring issues: Another possible cause of the P0135 code is wiring issues. If there is a problem with the wiring that connects the oxygen sensor to the ECM, it can cause the heater circuit to malfunction.
- ECM issues: In some cases, the problem may be with the ECM itself. If the ECM is not functioning properly, it may not be able to properly control the oxygen sensor heater circuit.
- Faulty fuse or relay: The oxygen sensor heater circuit is controlled by a fuse and relay. If either of these components is faulty, it can cause the circuit to malfunction.
- Exhaust leaks: Finally, exhaust leaks can also cause the P0135 code. If there is a leak in the exhaust system, it can cause the oxygen sensor to malfunction and trigger the code.
Fixes for P0135 Code Nissan
The P0135 code in Nissan vehicles indicates a fault in the HO2S11 heater circuit. This code can cause the check engine light to turn on and affect the performance of the vehicle. Here are some fixes for the P0135 code:
- Replace the Oxygen Sensor: The most common fix for the P0135 code is to replace the oxygen sensor. This sensor is responsible for measuring the oxygen levels in the exhaust and sending the data to the engine control module. A faulty sensor can cause the heater circuit to malfunction, resulting in the P0135 code.
- Check the Wiring: The wiring that connects the oxygen sensor to the engine control module can also cause the P0135 code. Check for any damaged or corroded wires and replace them if necessary.
- Replace the Fuse: The HO2S11 heater circuit is protected by a fuse. If the fuse is blown, it can cause the P0135 code. Check the fuse and replace it if necessary.
- Check the Engine Control Module: If all the above fixes do not solve the P0135 code, then the engine control module may be faulty. The engine control module is responsible for controlling the oxygen sensor and the heater circuit. A faulty module can cause the P0135 code.
- Clean the Oxygen Sensor: Sometimes, the oxygen sensor can become dirty and cause the P0135 code. Cleaning the sensor can solve the problem. Use a sensor-safe cleaner and follow the manufacturer’s instructions.
How Much Will it Cost to Fix P0135 Code on Nissan?
The P0135 code on Nissan indicates a fault in the HO2S11 heater circuit. This code is usually caused by a faulty oxygen sensor or a problem with the wiring or connections in the heater circuit. If left unaddressed, this code can lead to poor engine performance and increased emissions.
The cost of fixing the P0135 code on Nissan can vary depending on the cause of the problem. If the issue is with the oxygen sensor, the cost of a replacement sensor can range from $50 to $200, depending on the make and model of your vehicle. Labor costs for replacing the sensor can range from $50 to $150, depending on the mechanic’s hourly rate.
In general, the cost of fixing the P0135 code on Nissan can range from $100 to $500, depending on the cause of the problem and the extent of the repairs needed.
Possible Causes and Fixes of Code P0135 Nissan
| Possible Cause | Fix | Cost to Fix |
|---|---|---|
| Failed HO2S11 sensor | Replace HO2S11 sensor | $100-$300 |
| Wiring issues in HO2S11 circuit | Repair or replace wiring in HO2S11 circuit | $100-$500 |
| Failed PCM | Replace PCM | $500-$1000 |
| Failed fuse or relay in HO2S11 circuit | Replace fuse or relay | $10-$50 |
How Serious is the P0135 Code in Nissan?
The P0135 code in Nissan indicates a problem with the heater circuit of the HO2S11 sensor. This sensor is responsible for measuring the oxygen content in the exhaust gases and sending the data to the engine control module (ECM) for proper fuel injection and emission control.
If left unaddressed, the P0135 code can lead to poor engine performance, reduced fuel efficiency, and increased emissions. It can also cause damage to other engine components, such as the catalytic converter, which can be expensive to replace.
Can You Still Drive with the P0135 Code on Your Nissan?
Yes, you can still drive your Nissan with the P0135 code, but it is not recommended. The code indicates a problem with the heater circuit of the HO2S11 sensor, which is responsible for measuring the oxygen content in the exhaust system. If the sensor is not working properly, it can affect the engine’s performance and fuel efficiency, and may even cause damage to other components.
Conclusion:
Overall, the P0135 code in Nissan vehicles indicates a problem with the HO2S11 heater circuit. This can lead to decreased fuel efficiency and potential damage to the engine if left untreated.
However, there are several steps that can be taken to diagnose and fix the issue, including checking the wiring and replacing the oxygen sensor if necessary. It is important to address this issue promptly to ensure the continued performance and longevity of your Nissan vehicle.
FAQ
What is P0135 code in Nissan?
P0135 code in Nissan refers to a fault in the HO2S11 heater circuit. This means that the oxygen sensor in bank 1 sensor 1 is not heating up properly, which can cause issues with the engine’s fuel efficiency and emissions.
What are the symptoms of P0135 code in Nissan?
The symptoms of P0135 code in Nissan include poor fuel economy, rough idling, engine misfires, and the check engine light turning on. In some cases, the car may also fail to pass an emissions test.
How do I diagnose P0135 code in Nissan?
To diagnose P0135 code in Nissan, you will need to use an OBD-II scanner to read the code and determine the specific issue. You may also need to inspect the wiring and connections to the oxygen sensor, as well as test the sensor itself to see if it is functioning properly.
How do I fix P0135 code in Nissan?
To fix P0135 code in Nissan, you may need to replace the oxygen sensor or repair any damaged wiring or connections. In some cases, you may also need to replace the PCM or ECM if they are not functioning properly.
Can I drive my Nissan with P0135 code?
While it is possible to drive your Nissan with P0135 code, it is not recommended. This code can cause issues with the engine’s performance and emissions, which can lead to further damage over time. It is best to have the issue diagnosed and repaired as soon as possible.
Learn about more p codes in Nissan here.
