Error C1104 on Nissan: what is it, how to fix it and avoid recurrence

Error C1104 on the dashboard Nissan - one of the most common problems associated with the system ABS/VDC (anti-lock brakes and stability control). It may appear on models Qashqai, X-Trail, Juke and others equipped with electronic security systems. Unlike critical engine errors, C1104 does not block movement, but it cannot be ignored: over time, it can lead to ABS failure or even complete loss of control over the car in an emergency..

In this article we will look at what exactly is hidden behind the code. C1104, why it occurs (spoiler: the ABS sensor is not always to blame!), how to diagnose the problem yourself with a minimal set of tools, and what to do to prevent the error from returning after a reset. We will pay special attention typical mistakes of car owners during repairs - avoiding them will save you thousands of rubles on unnecessary spare parts.

What does error code C1104 mean on Nissan?

Code C1104 in the diagnostic system Nissan stands for "Front right wheel speed sensor circuit malfunction" (Right Front Wheel Speed Sensor Circuit Malfunction). However this generalized description - in practice, the problem may lie not only in the sensor itself, but also in:

• 🔌 Wiring (breaks, short circuits, contact oxidation)
• 🛠️ ABS control unit (malfunction of internal circuits)
• 🔄 Wheel bearing (wear or play affecting the sensor signal)
• 🧲 Magnetic ring (damage or displacement)

Interesting fact: on some models Nissan (For example, Qashqai J10) error C1104 may appear false after replacing the wheel bearing, if the technician did not handle the sensor carefully or forgot to install the magnetic ring. Also, the code sometimes “sticks” in the memory of the ABS unit after the battery is deeply discharged.

⚠️ Attention: If the error C1104 accompanied by the lamp coming on ABS And VDC OFF At the same time, this may indicate problems with the control unit. In that case not recommended Resetting the error without diagnosing it risks blocking the brakes during emergency braking!

Reasons for error C1104: from simple to complex

In order not to waste time and money on replacing working parts, we will analyze all the possible reasons in order - from the most likely to the rare.

1. Problems with the wheel speed sensor

Sensor ABS the right front wheel is the most vulnerable spot. It is located next to the hub and is constantly exposed to dirt, moisture and vibration. Typical faults:

• 💀 Mechanical damage (case cracks, broken connector)
• 🔋 Short circuit inside the sensor (checked with a multimeter)
• 🧲 Contamination of the sensing element metal shavings

2. Wiring faults

The wires from the sensor to the ABS unit often rub against the suspension or rust at the connections. Please note:

• 🔌 Sensor connector (oxidation, poor contact)
• 🔗 Wire along the stand (rubbing against a spring)
• 🛠️ Shielding (damage to the braid leads to interference)

3. Problems with the hub and bearing

Worn out wheel bearing may cause play, due to which the ABS sensor records incorrect data. Also error C1104 appears if:

• 🔄 Magnetic ring (pulse ring) damaged or displaced
• 🛑 The hub is installed incorrectly (for example, after replacement)

4. ABS unit malfunction

Less often than not, the control unit itself is to blame, but if all previous checks have failed, you will have to diagnose it. Signs:

• 💻 The error returns immediately after reset
• 🔌 There are signs of corrosion or burning on the unit connector
• 🚨 The lamps are lit at the same time ABS, VDC And Check Engine

How to diagnose error C1104 yourself

For diagnosis you will need:

• 🔧 Multimeter (to check the resistance of the sensor and circuit)
• 🔍 Flashlight and mirror (for inspecting hard-to-reach places)
• 📱 Diagnostic scanner (ELM327 or specialized for Nissan)
• 🧰 Jack and wheel wrench (for wheel removal)

Step 1: Checking the ABS Sensor

1. Jack up the right front wheel and remove it.

2. Locate the ABS sensor - it is attached to the hub or steering knuckle. Clean it from dirt.

3. Disconnect the sensor connector and check the resistance between the contacts:

• 🔹Normal resistance: 800–1400 Ohm (depending on model)
• 🔸 If resistance 0 ohm - short circuit
• 🔶 If resistance ∞ (infinity) - break

Step 2: Check Wiring

1. Inspect the wire from the sensor to the ABS unit for chafing or damage to the insulation.

2. Test the circuit with a multimeter in the “testing” mode:

• 🔹 Between the contacts of the sensor connector and the ABS unit there must be resistance ~0 Ohm (no break)
• 🔸 Between any contact and the “mass” - ∞ (infinity) (no short circuit to the body)

Step 3: Check the hub and magnetic ring

1. Spin the wheel by hand - it should rotate smoothly, without play or extraneous noise.

2. Inspect the magnetic ring on the hub:

• 🔹 It must be intact, without chips or cracks
• 🔸 Gap between sensor and ring: 0.5–1.5 mm

Step 4: Reset error and test drive

After troubleshooting:

1. Reset the error using a scanner or by disconnecting the battery terminal for 10 minutes.

2. Drive 5–10 km, accelerating to 40–60 km/h and braking. If the error does not return, the problem is solved.

⚠️ Attention: If after reset there is an error C1104 appears immediately when the engine starts, this indicates permanent malfunction (for example, a break in the wiring or a faulty ABS unit). In this case, in-depth diagnostics are required at a service station with an oscilloscope.

How to resolve error C1104: step-by-step instructions

Depending on the cause, repair methods will vary. Below are detailed instructions for each case.

1. Replacing the ABS sensor

If the sensor is faulty (break, short circuit or mechanical damage), it must be replaced. For Nissan Qashqai J11 The sensor with the article number will fit 40520-4M000 (original) or analogues Febi, TRW.

Instructions:

1. Remove the right front wheel.
2. Disconnect the sensor connector (press the lock).
3. Unscrew the sensor mounting bolt (usually 10 mm).
4. Carefully remove the sensor without damaging the wiring.
5. Install the new sensor in reverse order. Important: do not overtighten the bolt - tightening torque 8–10 Nm.

2. Wiring repair

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

1. Find the location of the damage (most often - near the connector or along the stand).

2. If the wire is frayed:

• 🔹 Clean and solder the damaged area, insulating it with heat shrink.
• 🔸 If the damage is severe, replace the wire completely (you can use a repair kit from Nissan with article number 25460-4M000).

3. Treat the connector contacts contact lubricant (For example, Liqui Moly Kontaktreiniger).

3. Replacing the hub or bearing

If the bearing or magnetic ring is at fault:

1. Remove the hub (you will need a puller and a torque wrench).

2. Inspect the magnetic ring - if damaged, replace the hub assembly (e.g. 40500-4M000 for Qashqai).

3. When installing a new hub:

• 🔹Apply copper grease onto landing surfaces.
• 🔸Tighten the hub nut to a torque 200–250 Nm (see the manual for exact values!).

4. Diagnostics of the ABS unit

If all the previous steps do not help, the problem may be in the ABS unit. Repairing the unit yourself is difficult, but you can:

1. Remove the block (located under the hood, usually next to the brake master cylinder).

2. Inspect the connector for corrosion or burnt contacts.

3. Check the power supply of the unit (12 V on the corresponding contacts when the ignition is on).

4. If the unit is faulty, it will have to be replaced (the original is 40540-4M000, cost ~20,000 rubles) or send it for repair (some workshops resolder internal circuits).

Malfunction	Symptoms	Remedy	Cost (RUB)
ABS sensor is faulty	Error C1104, sensor resistance is out of range	Replacing the sensor	1 500–3 000
Damaged wiring	Open or short circuit in the sensor circuit	Repair/replacement of wiring	500–2 000
Wheel bearing wear	Wheel play, hum when driving	Replacing the hub or bearing	4 000–8 000
ABS unit is faulty	The error returns immediately after reset	Unit replacement/repair	15 000–30 000

Common repair mistakes and how to avoid them

Many car owners Nissan encounter that error C1104 returns after repair. Let's look at the most common mistakes and how to prevent them.

1. Replacing the sensor without checking the magnetic ring

If the magnetic ring on the hub is damaged or missing, the new ABS sensor will also generate an error. Always inspect the ring when replacing the sensor!

2. Ignoring wiring

Often the sensor is replaced, but the problem lies in a frayed wire, which again leads to a break. Always ring the chain after replacing the sensor!

3. Incorrect hub tightening

Tightening the hub nut too loosely or too tightly can cause play or deformation of the magnetic ring. Use torque wrench!

4. Reset the error without a test drive

Some people reset the error and consider the problem solved without checking for it to reappear. Always test the car after renovation!

What happens if you ignore error C1104?

If error C1104 is ignored, the ABS system stops working correctly on the right front wheel. This means that during emergency braking, the wheel may lock, which will lead to loss of control (especially on slippery roads). The malfunction can also cause the VDC (stability control) system to fail, which will further increase the risk of skidding.

Prevention of error C1104: how to avoid recurrence

To make a mistake C1104 did not return, follow these recommendations:

• 🚿 Wash your wheel arches regularly — Dirt and salt accelerate corrosion of sensors and wiring.
• 🔧 Check hub play every 20,000 km (or when replacing brake pads).
• 🔌 Process contacts ABS sensors with special lubricant (for example, CRC 2-26).
• 📊 Diagnose ABS at every maintenance - many faults can be identified at an early stage.

Also avoid:

• ❌ Strikes to the hub (for example, when changing a wheel carelessly).
• ❌ Using non-original sensors of dubious quality.
• ❌ Self-flashing of the ABS unit without special equipment.

FAQ: Frequently asked questions about error C1104

Is it possible to drive with error code C1104?

Technically yes, but highly not recommended. If the ABS fails, the right front wheel may lock during braking, resulting in a skid. The system will also not work VDC (stability control), which is dangerous on slippery roads.

Why does error C1104 appear after replacing the hub?

Most often this happens due to:

• 🔹 Damage to the magnetic ring during installation.
• 🔸 Incorrect tightening of the hub nut (loose or over-tightening).
• 🔶 Forgot to connect the ABS sensor connector.

Check all three points!

How to reset error C1104 without a scanner?

Can be detached negative battery terminal for 10–15 minutes. However this method resets everything errors, including engine adaptations. It is better to use a scanner (for example, ELM327 with the program Torque or Nissan DataScan).

How much does it cost to repair error C1104 at a service station?

The cost depends on the reason:

• 🔹 Replacing the sensor: 2,000–4,000 rub. (with work).
• 🔸 Wiring repair: 1,500–3,000 rub.
• 🔶 Hub replacement: 6,000–12,000 rub.
• 🔷 ABS unit diagnostics: 1,000–2,500 rub.

Could error code C1104 be caused by the battery?

Yes, if the battery is severely discharged or there are problems with the generator. Low voltage in the on-board network can cause malfunctions of the ABS unit, which leads to false errors. Check the voltage at the terminals with the engine running - it should be 13.8–14.4 V.