Error C1104 on Nissan: a complete analysis of causes and solutions

Error C1104 on the dashboard Nissan - one of the most common problems associated with the system ABS (Anti-lock Braking System). This code indicates a fault in the circuit wheel speed sensor (wheel speed sensor) or problems with its signal. Owners Qashqai, X-Trail, Juke and other brand models encounter it both on new cars and on used cars. The main danger of an error is the potential disabling of ABS and exchange rate stability systems (ESP), which directly affects control safety.

In this article we will look in detail at what it means C1104, which system components may fail, and how to diagnose the problem without visiting a service center. You will also find step-by-step instructions for troubleshooting, including checking the wiring, sensors and ABS control unit. We will pay special attention to typical repair mistakes and nuances for different generations. Nissan.

What does error code C1104 mean on Nissan?

Code C1104 in the self-diagnosis system Nissan stands for "Rear Right Wheel Speed Sensor Circuit Malfunction". This means that the ABS control unit (ABSCM) does not receive the correct signal from the rear right wheel sensor. In some cases, the error may be duplicated for other wheels (for example, C1101 - front left, C1102 — front right, etc.).

It is important to understand that C1104 - this is not a verdict, but just an indication of the problem in one of three possible places:

• 🔧 Wheel speed sensor (mechanical damage, contamination, failure).
• 🔌 Wiring and connectors (break, short circuit, oxidation of contacts).
• 🖥️ ABS control unit (less often, but failures in signal processing are possible).

In practice, in 70% of cases the sensor itself or its wiring is to blame. The ABS unit fails extremely rarely, usually after mechanical damage (for example, after an accident) or board corrosion.

Reasons for error C1104

To effectively eliminate C1104, you need to understand the root of the problem. Here are the main reasons why this error occurs:

1. Sensor contamination. Metal shavings or dirt adhere to the magnetic core of the sensor, which distorts the signal. This is especially true for cars with high mileage or after off-road driving.
2. Mechanical damage. Impacts to the hub or suspension can displace the sensor relative to the gear rotor, increasing clearance. Normal clearance - 0.5–1.2 mm.
3. Broken or shorted wiring. The sensor wires often chafe against suspension elements or rust at the mounting points.
4. Gear rotor malfunction. Chipping or corrosion on the rotor (which is attached to the hub) results in an unstable signal.
5. Sensor failure. Over time, the internal electronics of the sensor degrade, especially with frequent temperature changes.
6. Problems with the ABS unit. Rarely, but malfunctions are possible ABSCM, especially after unqualified repairs.

Interesting fact: on Nissan Qashqai J10 (2007–2013) error C1104 often appears after replacing wheel bearings, if the mechanic forgets to reinstall the sensor or damages its connector.

How to check the gap between the sensor and the rotor?

To check the gap you will need a feeler gauge 0.5–1.2 mm thick. Disconnect the sensor from the mount and insert the probe between its end and the gear rotor. If the probe does not pass or passes too freely, adjustment is required.

Symptoms of error C1104: how does it manifest itself?

Error C1104 rarely appears on its own. It is usually accompanied by other signs of malfunction:

• ⚠️ ABS light is on on the dashboard (sometimes along with ESP or VDC).
• 🚗 The brake pedal vibrates when braking hard (ABS does not work).
• 📉 Speedometer is not working correctly (the needle twitches or shows the wrong speed).
• 🔄 The error disappears and appears again after restarting the engine.
• 🛑 Deterioration of braking distance on a slippery road (due to disabled ABS).

On some models Nissan (For example, X-Trail T31) in case of error C1104 the indicator may additionally light up 4WD, if the car is equipped with all-wheel drive. This is because the all-wheel drive system also uses data from wheel speed sensors.

⚠️ Attention: If together with C1104 errors appear C1130 (ABS pump malfunction) or U1000 (problems with the CAN bus), this may indicate serious problems with the control unit. In this case, a comprehensive diagnosis is required.

Diagnosing error C1104: step-by-step instructions

Before replacing the sensor or going to a service center, perform self-diagnosis. You will need:

• 🔧 Multimeter (to check the resistance of the sensor).
• 🔍 Flashlight and mirror on the handle (for inspecting hard-to-reach places).
• 🛠️ Jack and wheel wrench (for removing the wheel).
• 🧲 Magnet (to check the magnetic field of the sensor).

Step 1: Visual inspection of the sensor and wiring

1. Lift the rear right side of the car and remove the wheel.
2. Locate the wheel speed sensor (usually attached to the hub or steering knuckle).
3. Check the integrity of wires and connectors. Oxidation or damage to the insulation is a reason for replacement.
4. Clean the sensor and gear rotor from dirt (use WD-40 and a soft brush).

Step 2: Check the sensor resistance

Disconnect the sensor connector and measure the resistance between its contacts. Normal values for Nissan:

Car model	Normal sensor resistance (Ohm)
Qashqai J10/J11	800–1400 Ohm
X-Trail T31/T32	900–1300 Ohm
Juke F15	700–1200 Ohm
Navara D40	1000–1500 Ohm

If resistance tends to 0 ohm (short circuit) or ∞ (break), the sensor must be replaced.

Step 3. Checking the voltage at the connector

Connect the multimeter in voltmeter mode to the contacts of the sensor connector (without disconnecting it from the wiring). When the wheel rotates (you can spin it manually), the voltage should change in the range 0.2–1.0 V. No signal indicates a sensor or rotor failure.

Inspect the sensor for damage|Check the resistance with a multimeter|Measure the voltage when the wheel rotates|Clean the sensor and rotor from dirt|Check the gap between the sensor and the rotor-->

How to fix error C1104: repair methods

Depending on the cause of the malfunction, solutions C1104 may vary. Let's look at the most effective solutions:

1. Cleaning the sensor and gear rotor

If the sensor is contaminated with metal shavings or dirt, it can be cleaned without replacement:

1. Remove the sensor from the mount (usually it is held on by one bolt).
2. Wipe the end part with a lint-free cloth soaked in WD-40.
3. Clean the gear rotor from rust and deposits (use fine sandpaper or a special cleaner).
4. Check the gap between the sensor and the rotor (should be 0.5–1.2 mm).

Critical information: On some models Nissan (For example, Pathfinder R51) the gear rotor is made as part of the hub. Replacing it requires complete dismantling of the hub assembly.

2. Replacing the wheel speed sensor

If the sensor is faulty (break, short circuit or mechanical damage), it must be replaced. For Nissan Original sensors with article numbers are suitable:

• 🔧 40520-4M000 (for Qashqai J10, X-Trail T31).
• 🔧 40520-JM00A (for Juke F15, Note E12).
• 🔧 40520-AL500 (for Navara D40, Pathfinder R51).

When replacing the sensor:

1. Disconnect the negative terminal of the battery.
2. Disconnect the sensor connector.
3. Unscrew the mounting bolt and remove the old sensor.
4. Install the new sensor, maintaining the gap.
5. Connect the connector and check for errors.

⚠️ Attention: Error after replacing sensor C1104 may remain in the memory of the ABS unit. To reset it, disconnect the battery for 10-15 minutes or use a diagnostic scanner (for example, Launch X431).

3. Wiring repair

If the problem is in the wiring, proceed as follows:

• 🔍 Find the place where the wire is broken or chafed (often this is the area next to the suspension arm).
• 🛠️ Clean and solder the damaged area, insulating it with heat shrink tube.
• 🔌 Check the connectors for oxidation - clean them with alcohol or a special contact cleaner.

4. Checking the ABS control unit

If the sensor and wiring are ok, but there is an error C1104 remains, the problem may be in the ABS unit. For diagnostics:

1. Remove the ABS unit (usually located next to the master cylinder).
2. Check the board for burnt elements or corrosion.
3. Measure the voltage at the power contacts of the unit (should be 12 V).

Repairing an ABS block is a complex procedure that requires soldering and knowledge of circuit design. In most cases, it is easier to replace the complete unit (original part numbers: 40500-4M000 for Qashqai, 40500-JM00A for Juke).

Common repair mistakes and how to avoid them

Many owners Nissan encounter the error reappearing C1104 after repair. This occurs due to typical errors:

• 🔧 Incorrect gap between sensor and rotor. If the gap is too large or small, the signal will be unstable. Always check it with a dipstick.
• 🔌 Poor insulation after wiring repair. Use heat-shrink tubing rather than electrical tape - it provides better protection from moisture.
• 🛠️ Replacing the sensor without cleaning the rotor. Dirt on the rotor negates efforts to replace the sensor.
• 🔋 Failure to reset errors after repair. If you do not reset the errors, the ABS unit will “think” that the problem remains.
• 🚗 Ignoring codes from other sensors. If together with C1104 Errors from other sensors are on, the problem may be in the ABS unit.

Case study: on Nissan X-Trail T32 after replacing the rear right sensor error C1104 disappeared for a day and then appeared again. The reason turned out to be a frayed wire next to the shock absorber - it was not noticed during the first inspection.

Prevention of error C1104

To minimize the risk of C1104, follow these guidelines:

• 🚿 Wash your wheel arches regularly, especially after off-road driving. This will prevent dirt from accumulating on the sensors.
• 🔧 Check the fastening of the sensors at every maintenance. Vibrations can loosen bolts.
• 🛠️ Use quality spare parts. Cheap non-original sensors often fail after 10–20 thousand km.
• 🔌 Treat connectors special lubricant (for example, Liqui Moly Electronic-Spray) for protection against corrosion.
• 🚗 Avoid aggressive driving over bumps - Impacts may damage sensors or wiring.

On cars with high mileage (150+ thousand km), it is recommended to preventively replace ABS sensors every 80–100 thousand km, even if there are no errors. This is cheaper than repairing the consequences of their failure.

FAQ: Frequently asked questions about error C1104

Is it possible to drive with error code C1104?

Technically yes, but it's not safe. If there is an error C1104 The ABS system is disabled, which increases braking distance on slippery roads. The stability control system may also not work (ESP), which is fraught with skidding during a sharp maneuver. It is recommended to correct the problem as soon as possible.

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

The cost depends on the model and type of spare part:

• Original sensor: 2 500–5 000 ₽.
• Non-original (for example, Febi, TRW): 1 200–2 500 ₽.
• Replacement work: 800–1 500 ₽ (in the service).

When replacing both rear sensors (which is often done for symmetry), the cost doubles.

Can error code C1104 appear after replacing the wheel bearing?

Yes, this is a common situation. When replacing a mechanical bearing, often:

• Damage to the ABS sensor wiring.
• They forget to reinstall the sensor to a new location.
• A bearing is installed without a magnetic ring (rotor), which makes the sensor useless.

Always check with your technician to see if the sensor is still working after replacing the bearing.

How to reset error C1104 without a scanner?

There are three ways:

1. Disconnect the negative battery terminal at 10–15 minutes. This will clear errors in the ABS unit memory.
2. On some models (for example, Qashqai J11) you can reset errors through the on-board computer menu: hold down the daily mileage reset button and turn on the ignition.
3. Drive 50–100 meters at a speed higher 40 km/h - some ABS units automatically recheck sensors.

If the error is returned, the problem is not resolved.

Can error code C1104 affect engine performance?

No, the error is directly on the engine C1104 no effect. However, on some models (for example, Nissan Juke with the system Start/Stop) ABS malfunction can block automatic engine shutdown at traffic lights. Also on vehicles with all-wheel drive (4WD) error can lead to activation of the transmission emergency mode.