Error C1105 on the dashboard Nissan Almera Classic (body B10) is one of the most common problems with the anti-lock braking system (ABS). It indicates a fault in the circuit right rear wheel speed sensor, but often the reason lies deeper - from oxidized contacts to failure of the ABS unit. Owners encounter this error after replacing wheel bearings, damaged wiring, or even simple corrosion of connectors.

Unlike engine errors (eg. P0300), C1105 directly affects safety: ABS may be disabled, and on some versions Almera Classic (2006–2012) - also block work ESP (if it is included in the package). In this article we will analyze exact reasons errors, diagnostic methods (including multimeter and scanner ELM327), as well as step-by-step repair instructions - from cleaning contacts to replacing the sensor or ABS unit.

What does error C1105 mean on Nissan Almera Classic

Code C1105 in the self-diagnosis system Nissan stands for “Right rear wheel speed sensor circuit malfunction”. This does not mean that the sensor itself is necessarily broken - the problem may lie in:

  • 🔌 Broken or shorted wiring from the sensor to the ABS unit.
  • 🧲 Damage to the magnetic ring on the hub (often worn out or cracked).
  • 🔋 Oxidation of contacts in the sensor connector or ABS unit.
  • 🖥️ ABS unit malfunctions (less common, but requires verification).

On Almera Classic The rear right wheel speed sensor is located on wheel bearing. Its signal goes to the ABS unit, which compares data from all wheels. If the signal from the right rear sensor is missing or distorted, the system records an error C1105 and turns off ABS.

⚠️ Attention: If the dashboard lights up ABS and ESP at the same time, the problem may be in the control unit. In this case, it is better to start diagnostics by checking the power supply of the unit (+12V on contact 1 connector).

Reasons for error C1105: from simple to complex

According to service center statistics, in 80% of cases Mechanical damage or corrosion is to blame. Let's consider the reasons by frequency of occurrence:

  1. Wiring damage — frayed or broken wires near the hub (especially after replacing the bearing).
  2. Oxidation of contacts in the sensor connector or ABS unit (a typical problem for cars older than 10 years).
  3. ABS sensor malfunction — break in the internal winding or short circuit.
  4. Damage to the magnetic ring on the hub (wears off or bursts over time).
  5. ABS unit malfunction - rare, but requires verification if all other causes are excluded.

On Almera Classic with a mileage of more than 150 thousand km, a combination of problems is often encountered: for example, frayed wiring + oxidized connector. This complicates diagnosis, so it is better to check step by step.

📊 What ABS malfunction have you already encountered?
  • ABS light came on
  • Brakes failed during emergency braking
  • Error after replacing wheel bearing
  • Never had a problem

How to diagnose error C1105 yourself

For diagnosis you will need:

  • 🔧 Multimeter (to check sensor resistance and voltage).
  • 🔍 Scanner ELM327 (for reading errors, e.g. via app Torque Pro).
  • 🛠️ Jack and wheel wrench (to remove the wheel).

Step 1: Reading Errors

Connect the scanner to the connector OBD-II (located under the steering wheel) and check for additional codes. If in addition C1105 There is C1100 or C1130, the problem may be in the ABS unit.

Step 2: Checking the ABS Sensor

  1. Remove the right rear wheel.
  2. Locate the ABS sensor on the hub (attached with one bolt on 10 mm).
  3. Disconnect the connector and measure the sensor resistance with a multimeter. Normal value: 800–1400 Ohm.
  4. Check the wires for a break (the resistance between the connector contacts should be 0 ohm).

Step 3: Check the magnetic ring

Inspect the ring on the hub for cracks or chips. If it is damaged, the sensor will not read the signal correctly.

Read errors using ELM327 scanner

Check the resistance of the ABS sensor (800–1400 Ohm)

Ring the wires for a break

Inspect the magnetic ring on the hub

Check the contacts in the ABS unit connector -->

Step-by-step instructions for resolving error C1105

Depending on the cause, repairs may include:

Reason Solution Cost (independent/service)
Oxidation of contacts Cleaning the connectors WD-40 or contact spray, replacement of damaged pins. 100–300 ₽ / 500–1000 ₽
Wiring damage Repair with electrical tape/heat shrink or replace a section of wire. 200–500 ₽ / 1500–2500 ₽
Faulty ABS sensor Replacing the sensor (article: 40520-BM400 or equivalent). 800–1500 ₽ / 2000–3500 ₽
Damaged magnetic ring Replacing the hub assembly or ring (if separately available). 2000–4000 ₽ / 5000–8000 ₽

Instructions for replacing the ABS sensor:

  1. Jack up the right rear wheel and remove it.
  2. Disconnect the sensor connector (press the lock and pull up).
  3. Unscrew the sensor mounting bolt (10 mm) and remove it.
  4. Install a new sensor (original part number - 40520-BM400, analogues: Febi, TRW).
  5. Connect the connector and check the resistance (should be 800–1400 Ohm).
  6. Reset the error with a scanner or by disconnecting the battery for 10 minutes.
⚠️ Attention: When replacing the sensor, do not use a hammer or chisel as this may damage the seat. If the sensor does not come out, treat it WD-40 and gently loosen it.
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Before installing a new sensor, clean the seat from dirt and rust - this will prevent re-oxidation of the contacts.

Common repair mistakes and how to avoid them

Many owners Almera Classic encounter a relapse of the error C1105 after repair. Reasons:

  • 🔧 Poor contact cleaning - oxidation returns after 1-2 months. Solution: use contact spray (For example, CRC 2-26).
  • 🔌 Poor wire insulation — after the repair, the wires fray again. Solution: use heat shrink tube instead of electrical tape.
  • 🔄 Uncleared error — after replacing the sensor, the ABS light continues to light. Solution: reset the error using the scanner or disconnect the battery.

Critical error: if after replacing the sensor the resistance at the ABS unit connector remains infinite (OL on the multimeter), the problem is a broken wire inside the harness. In this case, a complete replacement of the wiring from the sensor to the unit is required.

When to contact service: signs of serious problems

Not all problems can be fixed on your own. Contact the service if:

  • 🚨 After replacing the sensor and wiring, an error C1105 remains, but the scanner shows additional codes (C1100, C1130).
  • 🔧 There is no power at the ABS unit connector (+12V on contact 1).
  • 🔄 ABS turns off randomly while driving (a symptom of a faulty control unit).

The service will carry out full diagnostics of the ABS unit using a professional scanner (Launch or Bosch KTS), check the signals from the sensors with an oscilloscope and, if necessary, replace the unit (original article number: 40540-BM400).

How much does it cost to replace an ABS unit at a service center?

The cost of a new ABS block for Nissan Almera Classic — from 8,000 to 15,000 ₽ (original). Replacement work will cost 2,000–4,000 rubles. Some service stations offer unit restoration (reflashing or replacing capacitors), which is 30–50% cheaper.

Prevention: How to Avoid Error C1105 in the Future

To prevent recurrence C1105:

  1. Every 20,000 km Inspect the ABS sensor connectors for corrosion.
  2. When replacing wheel bearings be sure to check the magnetic ring for integrity.
  3. Use silicone grease to protect connector contacts (for example, Liqui Moly Electronic-Spray).
  4. Avoid pressure washing the hub area - water gets into the connectors and causes corrosion.

If your Almera Classic often used in high humidity conditions (for example, in coastal regions), it is recommended treat ABS sensor contacts once a year special means (for example, CRC Contact Cleaner).

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Regular maintenance of ABS connectors and wiring reduces the risk of error C1105 by 70%.

FAQ: Frequently asked questions about error C1105

Is it possible to drive with error code C1105?

Yes, but ABS won't work, which will increase braking distance on slippery roads. There may also be problems with passing technical inspection.

Why does the error appear after replacing the wheel bearing?

Most often damaged magnetic ring or the sensor wires are frayed. Also, the new bearing may have a different gap between the sensor and the ring.

How to reset error C1105 without a scanner?

Disable negative battery terminal for 10–15 minutes. If the error returns, the problem is not resolved.

What analogues of the ABS sensor are suitable for Almera Classic?

Besides the original (40520-BM400), sensors are suitable Febi 23906, TRW GBS340 And Bosch 0 265 005 018.

Could error C1105 cause other problems?

Yes, if you ignore it for a long time, it may fail ABS unit or the wiring of other sensors is damaged.