Error C1106 on Nissan: a complete analysis of causes and solutions

Error C1106 on the dashboard Nissan - one of the most common problems in systems ABS/VDC, which may appear on models from Qashqai J11 to X-Trail T32. This code indicates a fault in the circuit wheel speed sensor (wheel speed sensor), but its appearance does not always mean a breakdown of the sensor itself. Often the problem lies in the wiring, connectors, or even software failures of the control unit.

Owners are faced with this error after replacing hubs, brake discs, or even a banal wash of the engine compartment. Main danger ignoring C1106 - disabling the ABS and VDC (stability control) systems, which is critical during emergency braking or on slippery roads. In this article we will analyze all possible causes, diagnostic methods (including scanners) ELM327 And Consult-III Plus) and step-by-step repair instructions - from checking connectors to flashing the ABS unit.

What does error code C1106 mean on Nissan?

Code C1106 in the system Nissan stands for "Right front wheel speed sensor circuit malfunction" (Right Front Wheel Speed Sensor Circuit Malfunction). However, in practice, the problem can affect any wheel - it all depends on the vehicle configuration and the firmware version of the ABS unit. It's important to understand that this code:

• 🔧 Doesn't always mean sensor failure - in 40% of cases, oxidized wiring or poor contact in the connector is to blame.
• 🚗 May appear periodically, especially in wet weather or after washing, which indicates water has entered the connector.
• 💻 Often accompanied by other codes, for example, C1105 (left front wheel) or C1111 (ABS unit malfunction).
• ⚠️ Causes ABS and VDC to turn off, as indicated by a flashing light on the instrument panel.

On models Nissan Qashqai J10/J11 And X-Trail T31/T32 error C1106 is often associated with the design features of the sensors - their location is close to the hub, which increases the risk of mechanical damage when replacing bearings or brake discs. In addition, on cars with a mileage of more than 150 thousand km, the sensor itself or its magnetic ring may wear out.

The main causes of error C1106

Diagnosis of the error C1106 should begin with an analysis of the conditions for its appearance. For example, if the code occurs after replacing a hub or brake rotor, the sensor or its wiring is most likely damaged. If the error appears after rain, the problem is in the connectors. Below is a complete list of possible causes, ranked by frequency of occurrence:

Reason	Frequency (%)	Signs
Oxidation or broken sensor wiring	35%	The error appears periodically, especially in humid weather.
Poor contact in the sensor or ABS unit connector	25%	The code resets after cleaning the connectors, but returns over time
Mechanical damage to the sensor (when replacing the hub/disc)	20%	The error is permanent, appeared immediately after repair
ABS/VDC unit malfunction	15%	Accompanied by other codes (C1111, U1000) or unstable system operation
Problems with the magnetic ring (impulse rotor)	5%	The error appears when driving at high speed or after replacing the hub.

Particular attention should be paid magnetic ring (impulse rotor), which is installed on the hub. By car Nissan With mileage, it can crack or shift, which leads to incorrect sensor signals. You can check its condition visually - just remove the wheel and inspect the ring for chips or signs of corrosion.

⚠️ Attention: If the error C1106 appeared after replacing the hub or bearing, never install cheap analogues without a magnetic ring. Even if the sensor is working properly, the absence of a ring or its poor quality will lead to constant failures.

How to diagnose error C1106 yourself

To diagnose an error C1106 it is not necessary to go to a service station - most checks can be performed independently using a multimeter and scanner (for example, ELM327 or Launch CReader). Below is an action algorithm that will help identify the cause of the malfunction:

1. Count all the mistakes scanner. If in addition C1106 there are codes U1000 (problems with the CAN bus) or C1111 (ABS unit malfunction), the problem is most likely in the control unit or wiring.
2. Check the sensor connector right front wheel (on Qashqai And X-Trail it is located next to the hub). Oxidation or water inside is a common cause of error.
3. Measure the sensor resistance multimeter. Normal value for most models Nissan — 800–1400 Ohm. If the resistance approaches zero or infinity, the sensor is faulty.
4. Ring the wiring from the sensor to the ABS unit. A break or short circuit to ground is a reason to repair the harness.
5. Check the magnetic ring on the hub. It must be intact, without cracks or traces of corrosion.

If you do not have a scanner, you can try to reset the error by disconnecting the battery (remove the terminal for 10–15 minutes). However, this method only works if the problem was temporary (for example, a failure in the ABS unit). If the code is returned, in-depth diagnostics are required.

Read all errors with a scanner|Check the sensor connector for oxidation|Measure the sensor resistance (800–1400 Ohms)|Run the wiring to the ABS unit|Inspect the magnetic ring on the hub-->

Step-by-step instructions for resolving the error

After diagnosis, you can begin repairs. Below is an algorithm of actions depending on the identified cause. Let's start with the simplest thing - cleaning the connectors:

1. Cleaning the sensor and ABS unit connectors

Most often the error C1106 occurs due to oxidation of contacts. For cleaning you will need:

• 🔧 Screwdriver (for removing protection)
• 🧴WD-40 or isopropyl alcohol
• 🧼 Brush with stiff bristles
• 🔌 Dielectric grease (e.g. Liqui Moly Kupfer-Spray)

Procedure:

1. Disconnect the right front wheel sensor connector.
2. Clean the contacts with alcohol or WD-40, removing oxides with a brush.
3. Check the integrity of the wires - they should not be frayed or broken.
4. Apply dielectric grease to the contacts and put everything back together.
5. Reset the error using a scanner or disconnecting the battery.

2. Replacing the wheel speed sensor

If the sensor is faulty (resistance is abnormal or mechanical damage is visible), it must be replaced. For Nissan Qashqai J11 And X-Trail T32 Sensors with article numbers are suitable:

• 🔍 40520-4M000 (original)
• 🔍 40520-4M00A (analogue from Febi or TRW)

When replacing:

• ⚠️ Do not use a hammer to knock out the sensor - only a puller or careful blows through a wooden spacer.
• ⚠️ After installing the new sensor, check the gap between it and the magnetic ring - it should be 0.5–1.5 mm.

3. Wiring repair

If the problem is a broken or shorted wire, you can try to restore the circuit:

• 🔧 Find the break point (usually near the hub or in the corrugation of the harness).
• 🔧 Strip and solder the wires, insulating them with heat shrink.
• 🔧 Secure the tourniquet so that it does not rub against the suspension or body.

Features of error C1106 on different Nissan models

Although it's a mistake C1106 universal for all models Nissan with the ABS/VDC system, its manifestations and solutions may differ. Below are the key nuances for popular models:

Nissan Qashqai (J10, J11)

On Qashqai first and second generation error is often associated with:

• 🔧 Water entering the ABS unit connector (located under the hood next to the vacuum booster).
• 🔧 Wear of magnetic rings on hubs after 120–150 thousand km.
• 🔧 ABS unit firmware failures, especially after updates via Nissan Consult.

On these models, the ABS unit often “glitches” after disconnecting the battery. If the error appears after resetting the terminal, try reflash the block official software.

Nissan X-Trail (T31, T32)

On X-Trail third generation (T32) error C1106 often occurs after:

• 🔧 Replacement of wheel bearings (especially if non-original parts without a magnetic ring were used).
• 🔧 Installing lift kits or spacers - the gap between the sensor and the ring changes.
• 🔧 Dirt gets into the sensor connector (due to its location next to the brake mechanism).

On T31 (second generation) the ABS unit itself often fails. If the error is accompanied C1111 And U1000The unit will most likely need to be replaced or repaired.

Nissan Juke and Note

On compact models (Juke, Note) error C1106 usually associated with:

• 🔧 Damage to wiring due to the close location of the harness to the suspension.
• 🔧 Contact corrosion in the ABS unit connector (located under the plastic protection to the right of the steering wheel).
• 🔧 CAN bus malfunctions, if the error appears along with U1000.

How to check the ABS unit on a Nissan X-Trail T32

1. Remove the ABS unit (located under the hood next to the vacuum booster).

2. Disassemble the case (carefully so as not to damage the board).

3. Inspect the capacitors for swelling - this is a common cause of failures.

4. If the capacitors are swollen, they can be replaced with new ones (for example, with a capacity of 1000 μF, 16 V).

5. After repair, flash the unit with official software via Nissan Consult-III Plus.

When replacement or flashing of the ABS unit is required

If all the previous methods did not help, the problem may lie in the ABS/VDC unit itself. This is indicated by:

• 🔧 Error C1106 appears along with C1111 (unit malfunction) or U1000 (problems with the CAN bus).
• 🔧 After resetting the error, it returns immediately after starting the engine.
• 🔧 ABS and VDC systems are completely disabled, even if the sensors are working properly.

In this case there are two options:

1. Block firmware official software via Nissan Consult-III Plus. This may help if the crash is caused by a software error.
2. Replacing the block for new or used with a guarantee. Original blocks for Qashqai J11 have an article number 40540-4M000, for X-Trail T32 — 40540-4M010.

The cost of a new ABS block for Nissan amounts to 30–60 thousand rubles, but you can save money by buying a used part from disassembly (about 10–15 thousand rubles) and reflashing it to match your VIN. However, be careful - units with more than 100 thousand km may have worn out relays or capacitors.

⚠️ Attention: When replacing the ABS unit, be sure to G-sensor initialization And calibration of angular rate sensors through Nissan Consult. Without this procedure, the ABS and VDC systems will not work!

💡

If the ABS unit has been changed or flashed, be sure to initialize it. Without this, the safety systems (ABS, VDC, TCS) will remain inactive, even if there are no errors.

Prevention of error C1106

To avoid the error reappearing C1106, follow these guidelines:

• 🛠️ Clean sensor connectors regularly (once every 20–30 thousand km) from dirt and oxidation.
• 🚿 Avoid high-pressure washing of engine compartments — water may get into the connectors of the ABS unit.
• 🔧 Use only original sensors and magnetic rings when replacing hubs or bearings.
• 📊 Periodically read errors with a scanner, even if the ABS lamp does not light up, this will help identify the problem at an early stage.
• 🛣️ Avoid driving through deep puddles — water getting on the sensor connectors is a common cause of error.

If your Nissan often used in difficult conditions (mud, salt, off-road), it makes sense to treat the connectors of the sensors and the ABS unit dielectric grease (For example, CRC 2-26 or Liqui Moly Electronic-Spray). This will prevent oxidation and corrosion of the contacts.

FAQ: Frequently asked questions about error C1106

Is it possible to drive with error code C1106?

Technically possible, but highly not recommended. If there is an error C1106 ABS and VDC systems are disabled, which increases braking distance and the risk of skidding, especially on wet or icy roads. If the error appears suddenly, get to the repair site at low speed, avoiding sudden braking.

Why does error C1106 only appear in wet weather?

This is a sign of water getting into the connector of the sensor or ABS unit. Moisture causes a short circuit or signal leakage, which causes an error. The solution is to clean the connectors and process them dielectric grease.

I cleared the error by disconnecting the battery, but it returned. What to do?

If the error returns after a reset, the problem is physical — the sensor, wiring or ABS unit is faulty. Start by checking the sensor resistance and wiring integrity. If everything is in order, diagnose the ABS unit.

Is it possible to replace the wheel speed sensor on only one wheel?

Yes, the sensors do not require pair replacement. However, if the car's mileage is more than 150 thousand km, it is advisable to replace the sensors on both axles (or all four wheels) for preventive purposes.

How much does it cost to repair error C1106 at a service station?

The cost depends on the reason:

• 🔧 Cleaning connectors - 500–1500 rub.
• 🔧 Replacing the sensor - 2000–5000 rub. (with work).
• 🔧 Repair/replacement of ABS unit — 10,000–40,000 rub.