Nissan Error P2135: A Complete Guide to Troubleshooting Throttle Troubleshooting

Error code P2135 on cars Nissan is one of the most common problems associated with the electronic throttle control system. It signals a discrepancy between the actual position of the accelerator pedal and the data it receives ECU (electronic control unit) from sensors. Drivers often encounter this error on models Qashqai, X-Trail, Juke And Note, especially after the 2010 release, when the manufacturer massively switched to electronic throttle units instead of mechanical ones.

Manifestations of the error can vary from a slight “twitching” at idle to a complete transition of the engine to emergency mode with power limitation. In some cases, the car may even stall while driving, which creates a dangerous situation on the road. At the same time, the indicator on the dashboard lights up Check Engine, and the OBD-II scanner produces a code P2135 with the wording “Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation”.

In this article we will look in detail at:

• 🔍 What exactly does error P2135 mean? and what systems does it affect?
• 🚗 Typical symptoms on different models Nissan (with emphasis on Qashqai J10/J11)
• 🛠️ Step-by-step diagnostics using a multimeter and scanner
• 💰 Repair cost in service vs. self-removal
• ⚠️ Common mistakes during repairs that lead to recurrence of the problem

What does error P2135 mean on Nissan: code decoding

Code P2135 belongs to the category of errors associated with inconsistency of throttle position sensor (TPS) signals. In modern Nissan system is used Drive-by-Wire, where there is no mechanical connection between the gas pedal and the throttle. Instead, the signal from the pedal is read by a sensor and processed ECU, and then transmitted to the servo drive of the throttle assembly.

The error occurs when the control unit detects discrepancy in readings between:

• 📊 Accelerator pedal position sensor (APP Sensor) — usually there are two of them (A and B) for reservation
• 🔄 Throttle Position Sensors (TPS) - also duplicated for reliability
• 🖥️ Expected position, calculated by the ECU based on other parameters (speed, load, temperature)

For example, if you press the pedal by 50%, and the throttle sensors show an opening of 30%, this is a trigger for P2135. The ECU perceives this as a critical malfunction and may:

• ⚠️ Switch the engine to emergency mode (speed limit to 2000–3000 rpm)
• 🚨 Record the error in memory and enable Check Engine
• 🔌 Disable cruise control and other assistance systems

⚠️ Attention: On some models Nissan (For example, Qashqai 2.0 MR20DD) error P2135 may be accompanied by code P2101 (“Throttle Actuator Control Motor Circuit Range/Performance”). This indicates a problem with the damper actuator, not just the sensors. In this case, a comprehensive diagnosis is required.

Symptoms of error P2135: how it manifests itself on Nissan

Symptoms of a malfunction depend on the degree of discrepancy between the signals and the vehicle model. On Nissan Qashqai J11 And X-Trail T32 with engines MR20DD or HR16DE symptoms are usually the following:

Symptom	Description	Frequency of occurrence
Floating idle speed	The speed changes spontaneously in the range of 500–1500 rpm, the engine may stall	90%
Delayed response to the gas pedal	When you press the accelerator, the engine “thinks” for 1–3 seconds, then suddenly picks up speed	80%
Limp Mode	Power limitation, inability to accelerate above 60–80 km/h	70%
Jerks during acceleration	The car jerks when you press the pedal smoothly, especially in low gears	60%
Check Engine Lights On and Off	The error appears periodically, for example, after a cold start or at high humidity	50%

On Nissan Juke with turbo engine MR16DDT error P2135 often accompanied failures during gas transfer And loss of traction at high speeds. Owners Note E12 complain about difficult engine starting after a long stay, especially in wet weather.

It's interesting that on Nissan Patrol Y62 with engine VK56VD the error may manifest itself in other ways - like unstable operation at idle with the air conditioner on. This is due to increased load on the generator and voltage drops in the on-board network.

Causes of P2135: From Sensors to Wiring

Main causes P2135 can be divided into hardware (malfunction of parts) and software (failures in the ECU or firmware). According to statistics from service centers, in 60% of cases sensors or wiring are to blame, in 30% there are mechanical problems with the throttle assembly, and only in 10% there are software errors.

Let's look at each category in more detail:

• 🔧 Malfunction of the accelerator pedal position sensors (APP Sensor)
  

  Sensors wear out over time and their resistive traces wear out or oxidize. Often the problem occurs after moisture gets into the connector (for example, after pressure washing). On Nissan Qashqai Pedal sensors are a weak point; their service life rarely exceeds 150–200 thousand km.

• 🔄 Damage to throttle position sensors (TPS)
  

  Similar to pedal sensors, but adds the risk of mechanical damage when cleaning the throttle. For example, if you use a brush that is too stiff when cleaning, you can damage the plastic damper rod, which will lead to incorrect readings.

• 🔌 Problems with wiring or connectors
  

  Oxidation of contacts, chafing of wires (especially in kinks near the gas pedal), or short circuit. On Nissan X-Trail T31 The wiring harness running from the pedal to the ECU often suffers - it rubs against the body bracket.

• 🖥️ ECU malfunctions or incorrect firmware
  

  Rarely, but there are cases when an error P2135 appears after flashing the control unit (for example, during chip tuning). “Glitches” of the ECU memory are also possible, especially if the battery was previously disconnected without following the adaptation reset procedure.

• 🛠️ Mechanical problems with the throttle assembly
  

  Damper contamination with carbon deposits, wear of drive gears, or shaft play. On Nissan Juke often found with turbo engines damper jamming due to oil entering the intake manifold through the crankcase ventilation system.

⚠️ Attention: If the error P2135 appeared after replacing the throttle assembly or gas pedal, in 90% of cases the problem lies in uncarried adaptation new equipment. Many repairmen forget to reset old calibrations in the ECU, which is why the control unit continues to use incorrect data.

Diagnosing error P2135: step-by-step instructions

For an accurate diagnosis you will need:

• 🔧 OBD-II scanner (preferably with support for advanced options, e.g. Launch X431 or Autel)
• 📊 Multimeter (to check sensor resistance and voltage in circuits)
• 🔍 Visual inspection connectors and wiring

Sequence of actions:

1. Count errors by scanner
   

   Connect the OBD-II scanner and check for additional codes (for example, P0120, P0220, P2101). They will help you narrow down your search. Write it down freeze frame data (data about engine parameters at the time the error occurred).

2. Checking the accelerator pedal sensors (APP Sensor)
   

   Disconnect the connector from the gas pedal and measure the resistance between the sensor contacts (usually contacts 1–2 and 3–4). When you press the pedal smoothly, the resistance should change linear, no jumps. Normal values for Nissan:

   • 🔹 Pedal released: 0.5–1.0 kOhm
   • 🔹 Pedal pressed halfway: 2.0–2.5 kOhm
   • 🔹 Pedal to the floor: 4.0–4.5 kOhm
3. Diagnosis of throttle valve sensors (TPS)
   

   Similarly, check the resistance between the sensor contacts on the throttle assembly. On Nissan Qashqai J11 normal values:

   • 🔹 Shutter closed: 0.3–0.7 kOhm
   • 🔹 Damper open 50%: 1.5–2.0 kOhm

   Also check the supply voltage (usually 5V) on the contacts VC And E2 throttle connector.

4. Checking wiring and connectors
   

   Inspect the wiring harnesses for chafing, oxidation, or traces of moisture. Pay special attention to:

   • 🔹 Gas pedal connector (often located under the steering wheel)
   • 🔹 Throttle assembly connector (may be contaminated with oil)
   • 🔹 Wires coming from the ECU to the sensors (check the integrity of the insulation)

Throttle Actuator Test

With the ignition on (but not the engine running), try to manually open the throttle - it should smoothly return to its original position. If play or binding is felt, the assembly must be replaced.

Check the resistance of the sensors with a multimeter

Inspect connectors for oxidation

Make sure the error is not caused by a mechanical jam of the damper

Reset throttle adaptations after repair -->

If all sensors and wiring are normal, but there is an error P2135 remains, the reason may be:

• 🖥️ ECU malfunction (diagnostics on the stand is required)
• 🔧 Incorrect firmware (you need to reflash the unit with the official software)
• ⚡ Engine weight problems (check the contact of the negative wire on the body)

How to resolve error P2135: repair or replace?

The remedy depends on the identified cause. Let's consider the most common scenarios:

1. Cleaning the throttle body

If the error is caused by contamination of the unit, it can be cleaned without dismantling:

1. Remove the air duct leading to the throttle.
2. Apply carburetor cleaner (eg Liqui Moly Pro-Line Drosselklappen-Reiniger) on the damper and channels.
3. Wipe with a soft cloth without abrasives (do not use metal brushes!).
4. Crank the engine with the starter (without starting) 2-3 times to remove any remaining dirt.

⚠️ Attention: On Nissan with electronic throttle (For example, Qashqai J11) It is forbidden to press the gas pedal when the throttle connector is disconnected. This may lead to a calibration error, which will then have to be reset via the scanner.

2. Replacing the gas pedal or throttle sensors

If the sensors are faulty, they need to be replaced. For Nissan original numbers:

• 🔹Accelerator pedal sensor: 25070-4M000 (for Qashqai J10) or 25070-4M010 (for J11)
• 🔹 Throttle assembly: 22680-4M025 (for HR16DE) or 22680-JK00A (for MR20DD)

The cost of original sensors is from 3,000 to 8,000 rubles, analogues (for example, Blue Print or Febi) - 30–50% cheaper. However, saving here is risky: non-original sensors often have a different resistance range, which leads to a recurrence of the error.

3. Wiring repair

If the problem is in the wires, restore the circuit:

• 🔹 Frayed wires - insulate or replace the section of the harness.
• 🔹 Oxidized contacts - clean special liquid for contacts (For example, Kontakt 60).
• 🔹 Breaks - solder new wires with the same cross-section.

4. Reset throttle adaptations

After any intervention in the system Drive-by-Wire adaptations need to be reset. This can be done:

• 🔧 Through the scanner (select the “Throttle Valve Learning” or “TPS Reset” function).
• 🔄 Manually (for some models):

  1. Выключите зажигание на 10 секунд.
  2. Включите зажигание (не запуская двигатель), подождите 3 секунды.
  3. Полностью нажмите педаль газа и удерживайте 5 секунд.
  4. Отпустите педаль, выключите зажигание на 10 секунд.
  5. Запустите двигатель и дайте поработать на холостых 2–3 минуты.

Common repair mistakes and how to avoid them

Many owners Nissan encounter that error P2135 returns after repair. This occurs due to typical errors:

• 🔧 Ignoring reset adaptations
  

  Even after cleaning the throttle or replacing the sensors, the ECU continues to use the old calibration data. Always reset!

• 🔄 Using non-original sensors without testing
  

  Cheap analogues may have a different resistance range. Before installation, check them with a multimeter and compare them with the original.

• 🛠️ Incomplete diagnosis
  

  For example, they replaced the pedal sensor, but did not check the throttle assembly. Error P2135 may be caused by a combination of problems.

• ⚡ Weight problems
  

  Poor contact of the negative wire on the body or engine leads to “floating” sensor signals. Always check the weight!

Another common mistake is cleaning the throttle without dismantling. The deposits in the channels can be so dense that surface cleaning does not help. In such cases, a complete disassembly of the unit with washing in an ultrasonic bath is required (the service costs about 1,500–2,000 rubles per service).

What happens if you ignore error P2135?

Long-term driving with this malfunction leads to:

- Increased fuel consumption (up to +20%)

- Accelerated wear of the catalyst due to incorrect mixture composition

- Risk of sudden engine stop while driving (especially dangerous on the highway)

- Engine overheating due to unstable operation of the cooling system (on some models the fan is turned on by a signal from the throttle)

Cost of repairs in service vs. self-removal

Repair prices depend on the cause of the error and region. Here are the approximate prices for Moscow and the Moscow region (for 2026):

Type of work	Cost of service (RUB)	Cost yourself (RUB)	Notes
Diagnostics with a scanner	1 000–1 500	0 (if you have your own scanner)	Includes error reading and parameter checking
Cleaning the throttle valve	1 500–2 500	200–500 (purifier cost)	The service often offers knot removal (+1,000 rub.)
Replacing the gas pedal sensor	3,000–5,000 (with work)	1,500–3,000 (spare part only)	Original sensor for Qashqai J11 costs ~4,500 rub.
Replacing the throttle assembly	8 000–12 000	4 000–7 000	Includes system adaptation and testing
Wiring repair	2 000–4 000	300–1,000 (soldering, electrical tape)	Difficulty depends on the location of the break

Self-repair is beneficial if you have:

• 🔧 Basic skills in working with a multimeter and scanner
• 📖 Access to manuals for your model (for example, Nissan Consult)
• 🛠️ Diagnosis time (may take 2–4 hours)

If you are not confident in your abilities, it is better to contact the service. For example, on Nissan Juke with a turbo engine, improper throttle repair can lead to turbine damage due to incorrect pressure in the intake manifold.

FAQ: Frequently asked questions about error P2135 on Nissan

Is it possible to drive with error code P2135?

Short term - yes, but with caution. The engine may go into limp mode, limiting power and reducing handling. Driving for a long time with this error leads to increased engine wear and the risk of breakdown while driving.

Why does P2135 only appear in wet weather?

Most likely the problem is moisture entering the connector of the gas pedal or throttle sensor. Oxidized contacts create additional resistance, which distorts the signal. The solution is to clean the contacts and seal the connectors.

After replacing the throttle assembly, the error remained. What to do?

Probable reasons:

• 🔹 Adaptations have not been reset (be sure to do Throttle Valve Learning)
• 🔹 The new throttle is not original (check the resistance of the sensors)
• 🔹 The problem is in the gas pedal or wiring (diagnose comprehensively)

Is it possible to disable error P2135 programmatically?

Technically yes, but this highly not recommended. Disabling the error will hide the problem, but will not eliminate its cause. This can lead to unpredictable engine operation and increased fuel consumption. It is better to find and eliminate the source of the problem.

What other errors often accompany P2135?

Typical related codes:

• 🔹 P0120 — malfunction of the throttle position sensor circuit
• 🔹 P0220 — malfunction of the accelerator pedal position sensor circuit
• 🔹 P2101 - problem with the throttle valve actuator
• 🔹 P0507 — high idle speed (due to incorrect throttle operation)