Car owners Nissan - from compact Micra to powerful Patrol - sooner or later you may encounter an error P0135, which lights up on the dashboard as “check engine”. This error is related to the exhaust gas control system and directly affects engine performance, fuel consumption and environmental performance. In 90% of cases it indicates a problem with heated oxygen sensor (lambda probe) located in front of the catalyst.

Self-diagnosis and troubleshooting are possible, but require an understanding of the principles of operation of the system. In this article we will look at what exactly the code means P0135, what symptoms accompany it, and - most importantly - how to act correctly so as not to worsen the situation. The peculiarity of the error on Nissan cars is that it often masks more serious problems with the wiring or ECU if ignored for a long time.

What does P0135 mean on Nissan?

Code P0135 stands for «Heated Oxygen Sensor (HO2S) Heater Circuit Malfunction (Bank 1, Sensor 1)» — malfunction of the heating circuit of the oxygen sensor located before the catalytic converter in the first row of cylinders. The sensor (lambda probe) is responsible for measuring the oxygen content in the exhaust gases, and its heating is necessary to quickly reach operating temperature (from 300°C).

By car Nissan this sensor is integrated into the engine management system (ECM) and affects:

  • 🔥 Fuel mixture — The ECU adjusts the fuel supply based on sensor readings.
  • ⚡ Fuel consumption — incorrect data leads to over-enrichment or leanness of the mixture.
  • 🌿 Environmental friendliness - increased emissions CO And NOx in case of malfunction.

If the sensor heating circuit is open or shorted, the ECU records an error P0135 and can put the engine into emergency mode (limp mode). On some models Nissan (For example, Qashqai J11 or X-Trail T32) this manifests itself as a loss of power and jerking during acceleration.

📊 Which Nissan model did you encounter the P0135 code on?
  • Qashqai
  • X-Trail
  • Almera
  • Note
  • Other model

Reasons for error P0135

A malfunction in the oxygen sensor heating circuit can be caused by either mechanical damage or electrical problems. Below are the most common reasons for cars Nissan:

Reason Frequency of occurrence Difficulty in eliminating
Open or shorted sensor wiring 40% Medium (requires testing with a multimeter)
Failure of the sensor heating element 30% Low (sensor replacement)
Oxidation of contacts in the sensor connector 15% Low (contact cleaning)
Heating circuit fuse or relay malfunction 10% Low (fuse replacement)
ECU problems (rare) 5% High (diagnostics at a service station)

By car Nissan with mileage over 150,000 km Most often, the sensor itself fails - its heating element degrades over time due to thermal loads. On newer models (eg. Ariya or Leaf) the error may be due to software glitches in ECM, especially after updating the firmware.

⚠️ Attention: If the error P0135 accompanied by code P0130 (incorrect sensor signal), most likely the problem is in the lambda probe itself, and not in the heating circuit. In this case, a comprehensive diagnosis is required.

Symptoms of error code P0135 on Nissan

Error P0135 It doesn’t always manifest itself clearly, but it cannot be ignored. Main features:

  • 🚨 "Check Engine" light on — main indicator of malfunction.
  • 🛢️ Increased fuel consumption - on 10–20% above normal.
  • 🔄 Unstable engine operation — floating speed at idle.
  • 🚗 Loss of dynamics — slow acceleration, “dull” gas pedal.
  • 💨 Smell of fuel from the exhaust pipe - a sign of an over-enriched mixture.

On diesel models Nissan (For example, Navara NP300 or Pathfinder R52) the error may manifest itself as difficulty starting the engine when cold. On hybrids (for example, Note e-Power) a malfunction of the oxygen sensor sometimes leads to the electric motor turning off and switching to gasoline mode.

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If error P0135 appears only in wet weather or after washing the engine, first check the tightness of the sensor connector - water ingress often causes a short circuit.

Diagnosing error P0135: step-by-step instructions

For an accurate diagnosis you will need OBD-II scanner (For example, Launch CReader or ELM327) and multimeter. Follow the algorithm:

  1. Read the error codes.

    Connect the scanner to the connector OBD-II (usually located under the steering wheel) and check whether there is, in addition to P0135 other errors (eg P0134 — absence of sensor signal).

  2. Visual inspection of the sensor and wiring.

    Find the oxygen sensor (Bank 1 Sensor 1) - it is screwed into the exhaust manifold before the catalyst. Check:

    • 🔌 Integrity of the connector and lack of oxidation.
    • 🔥 Melting or damage to wires (especially the collector).
    • 💧 Traces of oil or antifreeze - they may indicate a leak from the engine.
  • Continuity of the heating circuit.

    Disconnect the sensor connector and measure the resistance of the heating element (between the contacts 3 And 4 on most models Nissan). Normal value: 2–10 ohms. If the resistance tends to infinity - a break, if 0 ohm - closure.

  • Checking the supply voltage.

    Turn on the ignition (without starting the engine) and measure the voltage between the contact +B (usually 1) and mass. Must be 12 V. No voltage indicates a problem with the fuse or relay.

    • Cool the engine (run on a cold engine!)

    Disconnect the negative battery terminal

    Wear protective gloves (the collector may be hot)

    Prepare a multimeter and OBD-II scanner-->

    If all tests indicate that the sensor is faulty, it must be replaced. By car Nissan original oxygen sensors have part numbers like 22690-XXXX (For example, 22690-4M200 for Qashqai J10). Analogues from Bosch or Denso also suitable, but require selection according to parameters.

    ⚠️ Attention: When replacing the sensor, never use thread sealant as this may damage the sensor. The correct tightening torque is sufficient (usually 40–50 Nm).

    How to fix error P0135: from simple to complex

    Solutions depend on the cause of the problem. Let's start with the simplest and cheapest methods:

    1. Cleaning connector contacts.

      Oxidation or contamination of the contacts can cause false alarms. Treat the contacts with a special liquid (for example, CRC Contact Cleaner) and check the connection.

    2. Replacing the fuse.

      On most models Nissan The oxygen sensor heating circuit fuse is located in the block under the hood (for example, EF15 on Almera N16). Check its integrity and replace if necessary.

    3. Wiring repair.

      If an open or short is detected, repair the circuit using soldering and heat shrinking. Do not use twists - they cannot withstand vibrations and high temperatures.

      How to properly solder oxygen sensor wires?

      Use solder with a melting point no lower than 200°C and rosin-based flux. After soldering, be sure to insulate the joint with heat shrink tubing and an adhesive layer. Do not allow tension on the wires - they must have some extra length.

    4. Replacing the oxygen sensor.

      If the heating element is faulty, the sensor must be replaced. Average cost of an original sensor for Nissan — 3 000–8 000 ₽, analogue - 1 500–4 000 ₽.

    After troubleshooting be sure to clear the error through a scanner or by disconnecting the battery at 10–15 minutes. If the code P0135 appears again, the problem may lie in ECM or wiring harness inside the passenger compartment (for example, under the driver's floor mat).

    💡

    On Nissan vehicles with the system Direct Adaptive Shift Control (For example, Teana J32) error P0135 can block gear shifting in automatic mode. In this case, urgent diagnosis is required.

    Common repair mistakes and how to avoid them

    Many owners Nissan make typical mistakes that lead to reoccurrence P0135 or worsening the problem. That's what it's impossible do:

    • 🔧 Use a sensor from a different model.

      Even if the connector is suitable, the characteristics of the heating element may vary. For example, a sensor from Toyota not suitable for Nissan X-Trail T31.

    • 🔥 Ignore weight check.

      A bad ground on the engine or body can simulate a sensor failure. Always check the resistance between the sensor ground and the battery - it should be close to 0 ohm.

    • 🛠️ Tighten the sensor without a torque wrench.

      Over-tightening leads to damage to the housing, under-tightening leads to air leaks. Use the key with torque 40–50 Nm.

    • 💻 Reset the error without eliminating the cause.

      If you just erase P0135 without repair, the ECU will again record the fault, and the engine will remain in emergency mode.

    On models with the system Eco Mode (For example, Nissan Juke) an oxygen sensor error can lead to disabling the economy mode. In this case, the indicator on the dashboard lights up Eco Off, and fuel consumption increases by 15–25%.

    FAQ: Frequently asked questions about error code P0135 on Nissan

    Is it possible to drive with P0135?

    Short term - yes, but not recommended. Driving for a long time with a faulty oxygen sensor leads to:

    • Increased fuel consumption (up to +25%).
    • Overheating of the catalyst and its failure.
    • Increased exhaust toxicity (failure to pass inspection).

    On some models (for example, Nissan Patrol Y62) the error may block downshifting in automatic mode.

    How much does it cost to replace an oxygen sensor on a Nissan?

    The cost depends on the model and type of sensor:

    • Original sensor: 3 000–12 000 ₽ (For example, 22690-AL50A for Almera G15).
    • Analogue (Bosch/Denso): 1 500–5 000 ₽.
    • Work at the service station: 800–2 500 ₽ (depending on the complexity of access).

    On Nissan GT-R or 370Z replacement may cost more due to the need to remove the guard and exhaust manifold.

    Can P0135 appear after washing the engine?

    Yes, this is one of the common reasons. Water entering the sensor connector or wires can cause:

    • Short circuit in the heating circuit.
    • Oxidation of contacts.

    Solution: dry the connector with a hairdryer (not hot air!) or use a spray to displace moisture (for example, WD-40 Specialist Contact Cleaner).

    What is the difference between Bank 1 Sensor 1 and Bank 1 Sensor 2?

    Bank 1 Sensor 1 — sensor before the catalyst (control), Bank 1 Sensor 2 — after the catalyst (diagnostic). Error P0135 always refers to first sensor (before the catalyst).

    On V-twin engines (for example, Nissan Pathfinder R51) Bank 1 - this is the bank of cylinders where the first cylinder is located (usually on the timing side).

    Could P0135 be caused by bad gasoline?

    No, directly - no. However, low-quality fuel can:

    • Contaminate the sensor with soot or additives, which will lead to its incorrect operation (errors P0130–P0134).
    • Disable the catalyst, which will indirectly affect the sensor readings.

    If after refueling errors appear on the oxygen sensor, try draining the fuel and refilling with high-quality gasoline with an octane rating of at least 95.