Error P0135 on Nissan: what it means, how to diagnose and fix it

Error code P0135 on the instrument panel Nissan - one of the most common signals about problems with the exhaust system. It indicates a malfunction oxygen sensor heater (lambda probe) in the first row (before the catalyst). This error can appear on any models - from Qashqai And X-Trail to Almera or Note, but the causes and solutions are often similar.

Ignore P0135 cannot: Running the engine for a long time with a faulty sensor will result in increased fuel consumption, loss of power, and even damage to the catalytic converter. In this article we will look at why the error occurs and how to diagnose it correctly (including nuances for specific models Nissan) and what to do for repairs - from simple cleaning of contacts to replacing the sensor.

What does P0135 mean on Nissan?

Code P0135 stands for "Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)". This means that the engine control unit (ECU) discovered a problem in the operation of the heating element of the first lambda probe (installed before the catalyst).

The oxygen sensor must quickly reach operating temperature (~600°C) in order to correctly measure the oxygen content of the exhaust gases. If the heater does not work, the sensor produces incorrect data, which leads to:

• 🔥 Increased fuel consumption (up to + 15-20%) due to the enriched mixture.
• ⚡ Loss of dynamics - The engine stalls when accelerating.
• 🚗 Unstable operation at idle (rpm floats).
• 🔧 Risk of catalytic converter damage due to incorrect mixture composition.

On Nissan with systems OBD-II (almost all models after 2000) error P0135 may be accompanied by other codes, for example, P0130 (incorrect sensor signal) or P0136 (short to ground). This clarifies the diagnosis, but the main cause usually lies in the heater or its circuit.

Causes of error P0135

A malfunctioning oxygen sensor heater can be caused by several factors. Here are the most common reasons for Nissan:

Reason	Signs	Frequency of occurrence
Open or short circuit in the heater circuit	The error appears immediately after starting the engine, the sensor does not heat up	40%
Oxidation or poor contact in the sensor connector	The error is floating, may disappear after cleaning the contacts	25%
Failure of the sensor heating element	The sensor does not respond to warming up, the error is constant	20%
Wiring problems (frayed wires, corrosion)	The error appears during vibration or after rain	10%
Malfunction of the control unit (ECU)	The error is accompanied by other ECU related codes	5%

On models Nissan With a mileage of more than 150 thousand km, the sensor itself is most often to blame - its heating element degrades over time. On newer machines (eg. Qashqai J11 or X-Trail T32) the problem often lies in the wiring, especially if the car was operated in conditions of high humidity or salty roads.

⚠️ Attention: On Nissan Almera N16 And Primera P12 error P0135 may appear due to a faulty sensor heater relay. Check the relay in the fuse box (usually located under the hood near the battery).

How to Diagnose P0135 on a Nissan

For an accurate diagnosis you will need OBD-II scanner (For example, ELM327 or Launch CReader) and a multimeter. Here is a step-by-step verification algorithm:

1. Treat errors as a scanner. Make sure there are no associated codes (for example, P0130 or P0171).
2. Check the sensor connector. Disconnect the chip and inspect the contacts for oxidation or damage.
3. Measure the heater resistance. Connect a multimeter in ohmmeter mode to the heater contacts (usually white and black wires). Normal resistance: 2–10 ohms (depending on the sensor model). If the resistance tends to infinity, there is a break; if it is close to zero, there is a short circuit.
4. Check the supply voltage. With the ignition on (but not the engine running), there should be a 12 V between the positive wire (usually gray or red) and ground.

On Nissan Juke And Note E12 The oxygen sensor is often located in an inconvenient location—accessing it may require removing the engine cover or even part of the exhaust system. Use flexible extension for key (For example, 1/2" with a cardan) so as not to strip the thread.

⚠️ Attention: On Nissan Murano Z51 And Pathfinder R51 oxygen sensors have special connectors with locks. Do not pull on the wires - press down on the plastic clip first to avoid damaging the contacts!

Step-by-step instructions for resolving the error

If diagnostics confirm a problem with the sensor heater or its circuit, proceed according to the following algorithm:

1. Cleaning contacts and checking wiring

Start with the simplest:

• 🔧 Disconnect the sensor connector and clean the contacts special liquid for electronics (For example, Kontakt 60).
• 🔍 Check the wiring for chafing or melting, especially near the collector (wires often rub against metal there).
• 📏 Make sure the wiring harness does not touch hot engine parts.

2. Replacing the oxygen sensor

If the heater is faulty, the sensor must be replaced. For Nissan original sensors are produced under the brand Hitachi or Denso. When choosing an analogue, pay attention to:

• 🔑 Number of wires (4 or 5 - depends on the model).
• 📏 Length and shape of the connector (on Qashqai J10 And X-Trail T31 The connectors are different!).
• 🔧 Availability of gasket (some sensors come with it, others don’t).

To replace:

1. Disconnect the negative terminal of the battery.
2. Disconnect the sensor connector.
3. Using the key on 22 mm (or a special remover for lambda probes) unscrew the sensor.
4. Install the new sensor after lubricating the threads graphite lubricant (do not use silicone!).
5. Connect the connector and check for errors.

3. Checking the power circuit

If the sensor is working, but the error remains, the problem may be in the power circuit:

• 🔋 Check the heater fuse (usually EF15 or EF20 in the block under the hood).
• 🔌 Ring the wires from the sensor to ECU for a break or short circuit.
• 📊 On Nissan Teana J32 And Maxima A35 the malfunction may be in heater relay (located in the interior fuse box).

Nuances for specific Nissan models

Some models Nissan have features that are important to consider when diagnosing P0135:

Nissan Qashqai J10/J11 And X-Trail T31/T32

On these crossovers, the oxygen sensor often fails due to oil getting into the exhaust system (for example, when the turbine or oil seals are worn out). Before replacing the sensor, check:

• 🛢️ Oil level (if it is high, there may be a leak into the manifold).
• 🔍 Condition of the intercooler and pipes (oil can get through cracks).

Nissan Almera N16 And Primera P12

On these models the error P0135 often accompanied P0136 (short to ground). Reason - corrosion in the ECU connector, which is located under the passenger’s feet. To resolve:

1. Remove the passenger side tunnel lining.
2. Disconnect the connector ECU and clean the contacts.
3. Apply dielectric grease onto the connector before reassembling.

Nissan Juke F15 And Note E12

On these compact models, the oxygen sensor is located very close to the catalyst, which causes it to overheating. If the error appears after driving for a long time at high speeds, try:

• 🔥 Install thermal screen between the sensor and the catalyst.
• 🔧 Replace the sensor with a model with ceramic heater (more resistant to overheating).

How to distinguish an original sensor from a fake?

Original sensors Hitachi or Denso for Nissan have:

- Manufacturer's logo engraved on the case (not a sticker!).

- Clearly marked with the part number (e.g. 22690-4M000 for Qashqai).

- Wires with heat-resistant insulation (does not melt when heated).

- A metal protective cap at the end (counterfeits often have a plastic cap).

Prevention of error P0135

To avoid the error reappearing, follow these recommendations:

• 🛢️ Use quality fuel. Poor gasoline with a high sulfur content will shorten the life of the sensor.
• 🔧 Check the condition of the exhaust system regularly. A burnt-out collector or cracks in pipes lead to air ingress and false sensor signals.
• 🚗 Don't ignore fuel system errors. A rich or lean mixture will accelerate wear on the lambda probe.
• 🔋 Monitor the on-board network voltage. Voltage surges (eg due to a faulty alternator) can damage the sensor heater.

On Nissan with mileage over 100 thousand km recommended preventive replacement of oxygen sensors every 80–100 thousand km, even if there are no errors. This will help avoid problems with the catalyst and fuel efficiency.

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 sensor leads to:

• Increased fuel consumption by 10–20%.
• Risk of overheating of the catalyst (if the mixture is too rich).
• Loss of power and unstable engine operation.

On Nissan with systems Eco Mode (For example, Qashqai J11) an error may block the transition to economy 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 (For example, Hitachi 22690-4M000 for Qashqai): 5,000–8,000 rub.
• Analogue (For example, Bosch 0 258 006 537): 2,500–4,000 rub.
• Replacement work in the service: 1,000–2,500 rub. (depending on the difficulty of access).

On Nissan Patrol Y61 or Navara D40 replacement may cost more due to the need to remove a guard or part of the exhaust system.

Can P0135 be caused by bad gasoline?

Yes, but indirectly. Poor fuel with high sulfur content or additives leads to:

• Contamination of the working surface of the sensor (it starts to “lie” and takes longer to heat up).
• The formation of carbon deposits on the heating element, which increases its resistance.

If the error appears after refueling at an unfamiliar gas station, try:

1. Top up high quality gasoline (For example, Gazpromneft G-Drive or Lukoil Ecto).
2. Drive by 50–100 km at high speeds (3,000–4,000 rpm) so that the sensor cleans itself.
3. If the error remains, clean or change the sensor.

How to reset error P0135 after repair?

After eliminating the cause, the error can be reset in three ways:

1. OBD-II scanner: Connect the device and select the "Erase errors" function.
2. Disconnecting the battery:
   1. Remove the negative terminal.
   2. Apply the brake (to discharge the capacitors).
   3. Wait 10–15 minutes.
   4. Reconnect the terminal.
3. Self reset (on some models):

   1. Включите зажигание (не запуская двигатель).
   2. Нажмите педаль газа до упора и удерживайте 10 секунд.
   3. Выключите зажигание.
   4. Запустите двигатель — ошибка должна сброситься.

On Nissan Leaf (electric car) error P0135 not found because it does not have an exhaust system. If it appears, this is a diagnostic equipment error.

Is it possible to clean the oxygen sensor instead of replacing it?

Yes, but this is a temporary solution. To clean:

1. Remove the sensor from the vehicle.
2. Immerse its working part (without connector!) in phosphoric acid on 15–20 minutes.
3. Rinse with water and dry.
4. Reinstall.

This method works in 50–60% cases, but after 10–20 thousand km the sensor usually fails again. On Nissan with systems Direct Injection (For example, Skyline V37) cleaning rarely helps due to high temperatures in the exhaust system.