Error 01044 on the ŠKODA Octavia A5: full analysis of the problem with the oil pressure sensor

Owners ŠKODA Octavia A5 (2004–2013) often encounter an error 01044A sensing that is displayed on the dashboard or diagnosed by an OBD-II scanner. This code indicates a problem with oil pressure sensor or its chain, but its appearance can be associated with a number of reasons - from banal oxidation of contacts to serious malfunctions in the engine lubrication system.

Unlike critical errors such as P0300 (misfires), 01044 It doesn’t always require a car to stop immediately, but it can’t be ignored. Oil pressure is a key parameter for engine health, and its incorrect readings can lead to a high risk of a high engine. oil starvation and cramping of the crankshaft, especially on engines 1.6 MPI, 1.8 TSI and 2.0 TDI, installed on Octavia A5. In this article, we’ll look at what exactly the error means, how to diagnose it correctly, and what steps to take to fix it, from the simplest wiring check to replacing the sensor or repairing the oil pump.

What does error 01044 mean on the ŠKODA Octavia A5

Code 01044 in the self-diagnosis system VAG stands for Incorrect signal of the oil pressure sensor (G61). This sensor is located on the cylinder block (usually next to the oil filter) and transmits data on the pressure of the oil in the air. Engine ECU. If the signal is outside the acceptable range (too high, too low or not at all), the control unit detects an error.

It is important to understand that 01044 It is not always the sensor’s problem. The error may occur due to:

• 🔌 Bad contact in the sensor connector or the wiring break.
• 🛢️ Low oil level or the bad quality of the product (dense, diluted with fuel).
• ⚙️ Failure of the oil pump Or a clogged oil filter.
• 🔧 Mechanical damage sensor (for example, after a neat replacement of the filter).
• 💻 EBU failure (Rarely, but occurs after firmware or voltage surges).

On Octavia A5 with engines 1.6 FSI and 1.8 TSI error 01044 often accompanied by the blinking of the oil pressure bulb at idle speeds, and on diesel 2.0 TDI It can only appear as code without external features. This makes it difficult to diagnose, so you need to check first. oil-pressure mechanical pressure gauge.

Reasons for error 01044: from simple to complex

In order not to waste time and money on replacement of serviceable parts, consider all possible causes of error. 01044 in order of their probability for ŠKODA Octavia A5:

Reason	Probability	Signs	Verification method
Oxidation of sensor contacts	70%	The error appears periodically, especially in humid weather.	Visual inspection of the connector, cleaning of contacts
Failure of the oil pressure sensor (G61)	60%	Persistent error, pressure readings do not correspond to real	Replacement with a knownly serviceable sensor
Low level or bad oil	50%	Pressure bulb burns on blanks, error appears after oil change	Checking the level and condition of the oil, replacing the filter
Broken or shorted wiring	30%	Error appears after repair, rubbing wires	Testing the circuit with a multimeter
Oil pump malfunction	20%	Low pressure at all speeds, engine knocks	Pressure check with mechanical pressure gauge

In practice, the sensor itself is most often to blame. G61 (especially at the $150,000 price tag.) km) or his contacts. For example, on Octavia A5 1.8 TSI The sensor is located in an uncomfortable place, and when replacing the oil filter, oil often gets on it, which over time leads to corrosion of the contacts. On diesel. 2.0 TDI the problem may be related to oil-tank pollution because of soot, which reduces pressure and provokes false alarms of the sensor.

⚠️ Attention! If the error 01044 accompanied by engine-knocking or oil pressure drop below 0.5 bar At idle speed, immediately turn off the car! It's the signs. oil starvationwhich can lead to the destruction of the liners and jamming of the engine.

How to diagnose error 01044 yourself

Before you go to the station, you can conduct a preliminary diagnosis of the error. 01044 on your own. For this you will need:

• 🔧 Multimeter (to check the sensor and wiring).
• 🛠️ Mechanical pressure gauge of oil (can be rented).
• 🔍 Lantern and screwdriver (to inspect the sensor).
• 📱 Diagnostic scanner (eg VCDS or ELM327 with the program Carista).

Step 1: Check the level and condition of the oil. On Octavia A5 This is done on a flat surface 5 minutes after the engine stops. If the oil is black, with metal shavings or smells of gasoline, a replacement is required. Also make sure that the oil filter is not clogged (on runs over 200 thousand). km is a frequent problem).

Step 2: Check the oil pressure sensor. It is located on the cylinder block (the exact location depends on the engine):

- On 1.6 MPI/FSI - to the right of the oil filter.

- On 1.8 TSI - on the left, closer to the checkpoint.

- On 2.0 TDI Under the turbine (access is difficult).

Clean the sensor contacts from oxidation and check the integrity of the wires.

Clear the sensor contacts of dirt and oxidation | Call the wiring with a multimeter (resistance should be ~0 Ohms) | Check the integrity of the wire insulation | Make sure that the sensor is tightly twisted (puffing moment 25 N·m)->

Step 3: Check the multimeter sensor. Disconnect the connector and measure the resistance between the sensor contacts:

- On the engine off: ~500-1000 Ohms.

At start-up (if the sensor is serviceable), the resistance should fall to ~50-100 Ohms.

If the readings are unchanged or equal to 0/infinity, the sensor is faulty.

Step 4: Measure the real pressure of the oil. To do this, unscrew the sensor and connect a mechanical pressure gauge. Normal values for Octavia A5:

- Idle passage: 0.8–1.5 bar.

- 2000 rpm: 2.0-3.5 bar.

If the pressure is below normal, the problem is in the oil pump or clogged channels.

Step-by-step instructions for resolving error 01044

If the diagnosis has shown that the problem is in the sensor or its circuit, follow this instruction to ŠKODA Octavia A5:

1. Replacement of oil pressure sensor (G61)

To replace you will need:

• 🔧 24 mm key (or special sensors).
• 🛠️ New sensor (article: 06B 919 101 A for gasoline engines, 03G 919 101 for diesel engines).
• 🧴 The sealing ring (usually included).
• 🧤 Gloves (oil may be hot!).

Replacement algorithm:

1. Disconnect the negative terminal of the battery.
2. Remove the connector from the sensor (press the lock and pull up).
3. With a 24mm key, unscrew the sensor gently (don’t lose the O-ring!).
4. Install a new sensor with a new ring and tighten with the moment 25 Nm.
5. Connect the connector and check for errors with a scanner.

2. Wiring repair

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

• Call the circuit from the sensor to the ECU (contact) T61/1 on the control unit connector).
• When breaking or closing, replace the damaged section of the wire (use a heat-shrink tube for insulation).
• Check the "mass" of the sensor - it must be reliably connected to the body.

3. Oil pump inspection

If the oil pressure is below normal and the sensor is in good condition:

• Remove the pallet and inspect the oil receiver for clogging.
• Check the pump back shaft (permissible value: not more than 0.1 mm).
• When the pump or reduction valve wears, replacement is required (for the 1.8 TSI and 2.0 TDI This is a laborious operation, it is better to trust specialists.

Common repair mistakes and how to avoid them

Many owners Octavia A5 Make common mistakes when removing the code 01044, which causes the problem to reappear. That's it can't do:

1. Ignore the real pressure test

Some immediately change the sensor without measuring the pressure with a pressure gauge. As a result, if the problem was in the pump or clogged channels, the error will return and the money will be wasted.

2. Use non-original sensors

Sensors from unknown manufacturers often give incorrect readings, especially on the basis of the 2.0 TDI. Buy only the original (VAG, Bosch, Hella) or high-quality analogues (Febi, Meyle).

3. Do not clean the connector contacts

Oxidation or oil on contacts is the most common cause of false positives. Always clean the connector before installing a new sensor.

4. Tighten the sensor with excessive force

Tightening torque - 25 Nm. If you pull over, you can damage the thread in the cylinder block (especially on aluminum blocks). 1.8 TSI).

5. Do not check the oil after replacing the sensor

If the oil is old or diluted with fuel (frequent problem with the oil) 2.0 TDI with faulty injectors), the new sensor will quickly fail.

⚠️ Attention! On Octavia A5 1.8 TSI after replacing the oil pressure sensor it may be necessary adaptation via a diagnostic scanner (for example, VCDS). Without this, the ECU may continue to generate an error even if the sensor is working properly.

Cost of repairs and where is the best place to get them repaired

The cost of fixing the error 01044 depends on the cause and region. Approximate prices for ŠKODA Octavia A5:

Type of work	Cost (on your own)	Cost (STO)
Replacing the oil pressure sensor	500–1500 rubles (sensor) + 0 rubles (work)	500–1500 rubles (sensor) + 800–1500 rubles (work)
Cleaning contacts and checking wiring	0 rubles (if you have a multimeter)	500–1000 ₽
Checking oil pressure with a pressure gauge	0 rubles (if you rent a pressure gauge)	1000–1500 ₽
Replacing the oil pump	5000–12000 rubles (pump) + 0 rubles (work)	5000–12000 rubles (pump) + 6000–12000 rubles (work)
Diagnostics with scanner (VCDS, Launch)	0 rubles (if you have your own scanner)	1000–2000 ₽

Where is the best place to repair:

• 🔧 On your own - if the problem is in the sensor or contacts (if tools are available).
• 🚗 Specialized service for VAG — if you need diagnostics with a scanner or pump replacement.
• 🛑 Unofficial service stations - only if there are good reviews (risk of running into unqualified craftsmen).

On Octavia A5 With mileage over 200 thousand km, complex problems are often encountered: for example, an error 01044 appears due to a worn-out pump, and at the same time it also reveals occurrence of piston rings (causing the fuel to dilute the oil). In such cases, it is better to conduct a complete engine diagnostics.

What should I do if the error remains after replacing the sensor?

If a new sensor is installed, the contacts are clean, and the error 01044 does not disappear, check:

1. **ECU firmware** - on some Octavia A5 A software update is required after replacing the sensor.

2. **Wiring integrity** from the sensor to the ECU (the wire in the harness may be damaged).

3. **Oil pressure gauge** - if it is really low, the problem is in the pump or crankshaft bearings.

4. **Resetting adaptations** via a diagnostic scanner (for example, Basic installation in VCDS).

If all else fails, contact a diagnostician with experience in VAG — there may be a malfunction of the ECU itself.

Prevention of error 01044 on the ŠKODA Octavia A5

To avoid problems with oil pressure sensor and error 01044, follow these guidelines:

1. Change oil and filter regularly

On Octavia A5 oil change interval - every 15,000 km (or once a year). For 1.8 TSI and 2.0 TDI use approved oil VW 502.00/505.00 (for example, Castrol Edge, Liqui Moly Top Tec). Take the original oil filter (06A 115 561 B) or from Mann, Mahle.

2. Monitor the oil level

Check the level every 1000 km (especially on 1.8 TSI, which “eats up” the oil). Leaks in the seals or valve cover gasket can also cause a drop in pressure.

3. Monitor the condition of the wiring

Periodically clean the sensor contacts from oxidation and check the integrity of the wire insulation. On Octavia A5 The wiring harness to the sensor often rubs against brackets or pipes.

4. Avoid overheating the engine

High temperatures accelerate oil degradation and can damage the sensor. Monitor the operation of the cooling system (especially on 1.6 FSIprone to overheating).

5. Use quality fuel

On 2.0 TDI bad diesel leads to oil dilution with fuel, which reduces pressure and provokes an error 01044. Refuel at proven gas stations.

FAQ: Frequently asked questions about error 01044

Is it possible to drive with error 01044?

Short-term - possible, but not advisable. If the error appears periodically and the oil pressure is normal (checked with a pressure gauge), the risk is minimal. However, if the error is constant or accompanied by a flashing pressure light, driving is dangerous - this can lead to oil starvation and engine failure.

Why does error 01044 only appear when it is cold?

This is a typical sign sensor malfunction or bad contact. On a cold engine, the oil is thicker, and the sensor may give incorrect readings due to oxidized contacts or internal defects. Try cleaning the contacts or replacing the sensor.

Which oil pressure sensor should I install on the Octavia A5 1.8 TSI?

Original article - 06B 919 101 A. Suitable analogues:

• Bosch 0 261 230 046
• Hella 6PU 009 107-011
• Febi 26106

Avoid cheap Chinese sensors - they often give false readings.

Could error 01044 be due to bad oil?

Yes. If the oil is old, thin with fuel, or out of specification, it may not produce enough pressure, especially at high rpms. Also, a clogged oil filter or oil receiver can lead to a drop in pressure and an error.

Do I need to reset the error after replacing the sensor?

On most Octavia A5 The error will reset itself after 2-3 engine starting cycles. However, on some versions of the software (especially on 1.8 TSI) may require a reset via a diagnostic scanner (e.g. VCDS → Block 01 → Reset errors).