Error 01305 on ŠKODA Octavia: a complete analysis of the causes and solutions

Error 01305 on the instrument panel ŠKODA Octavia - one of the most common problems associated with the system ABS/ESP. It may appear on models Octavia A5 (1Z3), A7 (5E) and even on new ones Octavia IV (NX), regardless of engine or gearbox type. In most cases, the error is accompanied by warning lights coming on. ABS and ESP on the dashboard, and sometimes by loss of functionality of these systems.

Owners are often confused 01305 with other fault codes such as 01314 (brake pressure sensor) or 00283 (ABS unit malfunction). However Error 01305 specifically indicates a problem with the wheel speed sensor (usually the rear right one), which requires a fundamentally different approach to diagnosis. In this article we will analyze all the possible causes, methods of checking and eliminating the malfunction - from banal dirt on the sensor to replacing the wiring or control unit.

What does error 01305 mean on the ŠKODA Octavia?

Code 01305 in the self-diagnosis system ŠKODA stands for "Wheel speed sensor malfunction - right rear (G44)". This sensor is responsible for transmitting wheel speed data to the control unit ABS/ESP, which, based on them, adjusts the braking force and prevents the wheels from locking or the car from skidding.

When the block ABS stops receiving correct data from the sensor G44 (or receives a signal out of range), it logs an error 01305 and disables some of the functions of the stabilization system. It is important to understand that the error itself does not lead to complete brake failure, but significantly reduces the effectiveness of emergency braking and controllability on slippery roads.

• 🔍 The main symptoms of error 01305:
• ⚠️ The lamps are burning ABS and ESP on the instrument panel;
• 🚗 The stabilization system is turned off (on the instrument there is an inscription). ESP OFF);
• 📉 The work of the anti-lock system deteriorates during braking;
• 🔧 The diagnostic scanner has a code. P01305 or 01305.

On some versions Octavia (especially with the system MK60 or MK60EC1) the error may be accompanied by additional codes, for example, 01316 (left rear sensor) or 01317 (front right). This indicates a system problem, not a local fault of a single sensor.

Reasons for error 01305

Sensor malfunction G44 It rarely occurs on its own—usually preceded by mechanical damage, electrical problems, or software failures. Below we list all possible causes, ranked by frequency:

1. Contamination of the sensor or the setting disk - the most common reason. Metal shavings, dirt, or corrosion on the surface of the sensor or cogwreath (which is attached to the hub) distort the signal.
2. Wiring damage - breaks, rubbing or oxidation of contacts in the harness running from the sensor to the block ABS.
3. Malfunction of the sensor itself failure of internal electronics (for example, a break in the coil or damage to the magnetic core).
4. Problems with the ABS control unit Failures in the operation of the module ABS/ESPwhich lead to a false positive of error.
5. Mechanical damage - deformation of the hub, backlash of the bearing or damage to the cog crown.
6. Software errors - failures in the firmware of the block ABSRequires reflashing or resetting adaptations.

It's interesting that on Octavia A7 with the system MQB error 01305 Sometimes appears after replacing the hub bearing or brake disc, if the master carelessly handled the sensor or forgot to reinstall the task disc.

How to diagnose error 01305 yourself

Before you go to the SRT, you can perform a preliminary diagnosis on your own. This will require:

• 🔧 Multimeter (to check the sensor resistance and integrity of the wiring);
• 🔍 Diagnostic scanner (for example, VCDS, OBDeleven or Launch X431);
• 🧲 Magnet (to check the response of the sensor);
• 🧹 Clean cloth and solvent (to clean the sensor).

Step 1: Read errors with scanner

Connect a scan tool and check for additional codes. If in addition 01305 There are errors in other sensors (for example, 01314 or 01316The problem may be in the block. ABS Or in the general food chain.

Step 2: Check the G44 sensor

The sensor is located on the rear right hub. Remove it (spinning one bolt on the 10 mm) and inspect for:

• 🧹 Pollution (clean the surface with solvent);
• 🔌 Damage to the hull (Cracks, impact marks);
• 🧲 Magnetic properties (Put a metal object in the back, it should be attracted).

Step 3: Ring the wiring

Disconnect the sensor connector and check:

• Resistance between sensor contacts (should be) 800–1400 Ohm);
• Integrity of wires from sensor to block ABS (No breaks or short circuits).

Step-by-step instructions for resolving the error

Depending on the cause, repair methods will vary. Below we present algorithms for the most common cases.

1. Cleaning the sensor and drive disk

If the sensor or ring gear is dirty, follow these steps:

1. Remove the sensor G44 (unscrew the bolt on 10 mm and carefully pull it out of the bracket).
2. Clean the sensor tip and ring gear surface with solvent (such as WD-40 or isopropyl alcohol).
3. Check the gap between the sensor and the disk - it should be 0.5–1.5 mm. If necessary, adjust the position of the sensor.
4. Reinstall the sensor and secure it with the bolt.

After cleaning, reset the error through the diagnostic scanner and check if it appears again. If yes, move on to the next step.

2. Checking and replacing the G44 sensor

If the sensor does not respond to the magnet or its resistance is outside the limits 800–1400 Ohm, it needs to be replaced. For ŠKODA Octavia original sensors fit:

• 1K0 927 801 A — for models up to 2013;
• 5Q0 927 801 - for Octavia A7 and newer.

When replacing the sensor:

1. Disconnect the negative terminal of the battery;
2. Remove the old sensor and install the new one;
3. Connect the battery and reset the errors;
4. Take a test drive (accelerate to 40 km/h and brake sharply - lamps ABS/ESP should go out).

3. Wiring repair

If the problem is a broken or shorted wire, proceed as follows:

1. Ring the wires from the sensor to the block ABS (usually located under the hood on the driver's side).
2. If a break is detected, strip and solder the wires, insulating the connection with heat shrink.
3. If the harness is severely damaged, replace it entirely (part number for Octavia A7: 5Q0 972 715).

After repairing the wiring, be sure to check the integrity of the insulation and secure the harness with ties to avoid chafing in the future.

4. Diagnostics of the ABS unit

If after replacing the sensor and checking the wiring the error remains, the problem may be in the control unit ABS. In this case:

• Check the voltage at the unit connector (should be 12 V on the power contact);
• Remove the unit and inspect it for corrosion or burnt contacts;
• If necessary, contact a service station to reflash or replace the unit.

On Octavia A5 with block Bosch 8.0 resetting adaptations through VCDS (select Block 03 → Basic settings → Channel 004 and perform a reset).

Reason for error	Remedy	Cost (RUB)	Difficulty
Sensor contamination	Solvent cleaning	0–200	⭐
G44 sensor malfunction	Replacing the sensor	1 500–3 000	⭐⭐
Wiring damage	Repair/replacement of harness	500–2 500	⭐⭐⭐
ABS unit malfunction	Flashing/replacement	5 000–20 000	⭐⭐⭐⭐
Wheel bearing play	Bearing replacement	3 000–8 000	⭐⭐⭐

Common repair mistakes and how to avoid them

Many owners ŠKODA Octavia encounter the error reappearing 01305 after a repair attempt. This occurs due to typical errors:

⚠️ Attention: Never use WD-40 to clean the contacts of the sensor connectors - its residues can cause corrosion. Use only specialized contact cleaners (e.g. Kontakt 60).

• 🔧 Incorrect sensor installation: If the sensor is installed misaligned or with too much clearance, the signal will be unstable. The gap should be 0.5–1.5 mm.
• 🔌 Connector damage: When disconnecting the sensor connector, it is easy to break the plastic clips. Always wring them out gently.
• 🧲 Ignoring master disk: If the ring gear on the hub is damaged or dirty, even a new sensor will not work correctly.
• 📱 Unreset errors: After repairs, be sure to reset errors through the scanner - some of them may “hang” in the unit’s memory.

Another common problem is the use of non-original sensors. Cheap analogues often have inappropriate resistance or magnetic characteristics, which leads to false alarms. Buy only certified spare parts from trusted suppliers.

What should I do if the error appears after replacing the wheel bearing?

When replacing a bearing, the drive disk (ring gear) is often damaged or displaced. If the disk is warped or installed askew, the sensor will read incorrect data. Solution: remove the hub, check the integrity of the crown and, if necessary, replace it (part number for Octavia A7: 5Q0 598 625).

When to contact a service station?

Not all faults are due to error 01305, you can fix it yourself. Contact a specialist if:

• 🔧 After replacing the sensor and checking the wiring, the error remains;
• 🚗 There are several warning lights on the dashboard (ABS, ESP, EPC);
• 📉 Block ABS does not respond to the diagnostic scanner;
• 💻 Re-flashing of the control unit is required (for example, after an unsuccessful software update).

At the service station, professional equipment is used for diagnostics, such as:

• Bosch KTS — for deep block checking ABS;
• Launch X431 Pro — for reading advanced sensor parameters;
• Oscilloscope - for analyzing the signal from the sensor G44.

The average cost of diagnostics at a service station is: 1,500–3,000 rubles. If the unit needs to be replaced ABS, be prepared for expenses from 15,000 to 30,000 rubles (depending on model Octavia).

⚠️ Attention: On some Octavia A7 with the system MQB block ABS integrated with ESP and EDL. Its replacement requires subsequent adaptation through ODIS or VCDS, otherwise error 01305 will appear again.

Prevention of error 01305

To avoid the error reappearing, follow these recommendations:

• 🧹 Clean ABS sensors regularly (especially after driving off-road or in slush).
• 🔧 Check wheel bearing play — at the first signs of wear (hum, vibration), replace them.
• 🔌 Monitor the condition of the wiring — avoid chafing the harnesses and getting moisture into the connectors.
• 📱 Reset errors periodically through a diagnostic scanner (every 10,000 km).
• 🚗 Avoid driving aggressively over bumps - impacts on the hub can dislodge the sensor or damage the drive disc.

On vehicles with more than 100,000 km recommended once every 2–3 years check the resistance of all sensors ABS and, if necessary, replace them with a set (even if the error appears only for one sensor, the rest may be on the verge of failure).

FAQ: Frequently asked questions about error 01305

Is it possible to drive with error 01305?

Technically yes, but highly not recommended. When the system is turned off ABS/ESP braking distance increases and the risk of skidding on slippery roads increases. In an emergency, the car may behave unpredictably.

Why does error 01305 appear after washing?

Most likely, water got into the sensor connector or onto the contacts of the unit ABS. Dry the connectors with a hairdryer (not hot air!) or use a spray to displace moisture (for example, CRC 2-26). If the error does not disappear, check the integrity of the wiring insulation.

How to reset error 01305 without a scanner?

On some models Octavia You can reset the error by disconnecting the battery at 10–15 minutes. However, this does not guarantee that the cause will be eliminated. To completely reset adaptations, you need a diagnostic tool.

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

The cost depends on the model:

• Octavia A5: sensor - 1,500–2,500 rub., work - 800–1,500 rub.;
• Octavia A7/A8: sensor - 2,000–3,500 rub., work - 1,000–2,000 rub..

Prices are for original spare parts. Analogs (for example, Febi or TRW) may be cheaper by 30–50%.

Could error code 01305 be caused by faulty brake pads?

No, the pads do not directly affect the operation of the sensor G44. However, if the pads are worn down to metal and scratch the brake rotor, vibrations can dislodge the sensor or damage its mounting. Always check the condition of the brake system when diagnosing an error.