Modern cars are equipped with complex electronic systems that constantly monitor the operation of all components. One of the most mysterious errors that owners of cars with on-board diagnostics encounter is the message «Invalid Data About Errors»** (or "Invalid error data"). This message may appear on the dashboard, in the on-board computer menu, or when scanning with a scanner OBD-II.
Unlike standard fault codes like P0300 (misfire) or U0100 (tire problems CAN), this error does not indicate a specific failure. It signals that electronic control unit (ECU) received incorrect data from one or more sensors, or the unit itself was unable to process the information correctly. Most often the problem occurs in cars Volkswagen, Audi, Škoda and Seat on the platform MQB, but also occurs in other brands.
In this article we will look at what exactly is hidden behind the error. «Invalid Data About Errors»**why it appears, how to correctly diagnose and eliminate it. You will also learn what measures will help prevent its reoccurrence.
What does the "Invalid Data About Errors" error mean?
Translated from English «Invalid Data About Errors» means "incorrect error data". This is not a specific fault code, but rather meta error, indicating a malfunction in the vehicle's diagnostic system. It may appear in the following cases:
- 🔌 Bus problems CAN — communication between electronic control units (ECU) is broken.
- 📡 Sensor malfunction — one or more sensors transmit incorrect signals (for example, overestimated or underestimated values).
- 💻 Errors in ECU firmware — after updating the software or resetting the settings.
- ⚡ Eating problems — voltage surges in the on-board network, discharged battery.
- 🔄 Data conflict - when two control units transmit conflicting information (for example, Engine ECU and Transmission ECU).
It is important to understand that this error in itself does not indicate mechanical failure car. She talks about problems in electronic part, which can be either hardware (damaged wires, oxidized contacts) or software (firmware failures, data reading errors).
The main reasons for the error
To effectively fix a problem, you need to understand its root cause. Let's consider the most common scenarios in which «Invalid Data About Errors»**:
1. Tire problems CAN
Tire CAN (Controller Area Network) is the “nervous system” of the car, through which all electronic units exchange data. If the connection is broken, the ECU begins to receive distorted or incomplete data, which leads to an error. Reasons:
- 🔌 Wiring damage — frayed or broken bus wires CAN.
- 🔋 Oxidation of contacts in the ECU connectors or on the bus itself.
- 🚗 Short circuit due to moisture or mechanical damage.
2. Sensor malfunctions
If one or more sensors begin to transmit incorrect data (for example, an oxygen sensor shows voltage 0 V, although I should 0.1–0.9 V), the ECU cannot process this information and generates an error. Most often the culprits are:
- 🔧 Crankshaft position sensor (CKP).
- 🔥 Knock sensor.
- 🌡️ Coolant temperature sensor (ECT).
- 💨 Mass air flow sensor (MAF).
3. ECU firmware errors
After updating the software or resetting the ECU, a data conflict may occur. For example, if the firmware was interrupted or installed incorrectly, the control unit begins to malfunction. This is especially true for cars VAG groups (for example, Volkswagen Golf MK7 or Audi A3 8V), where the error often appears after updating via ODIS or VCDS.
4. Eating problems
Voltage surges in the on-board network (for example, due to a discharged battery or faulty generator) can lead to malfunctions of the computer. If the voltage drops below 11.5 V or rises higher 14.8 V, electronic units begin to work unstably, which provokes an error.
What other reasons could there be?
Less commonly, the error occurs due to:
- immobilizer malfunction (for example, after replacing a key or ECU);
- conflict between additional equipment (alarm, multimedia) and standard electronics;
- physical damage to the ECU (for example, after an accident or moisture).
How to diagnose the "Invalid Data About Errors" error?
To accurately determine the cause, you need to conduct a comprehensive diagnosis. Here is a step-by-step algorithm:
- Count all errors by scanner OBD-II (for example, ELM327, VCDS, Autel). Error «Invalid Data About Errors»** often accompanied by other codes that will indicate the problem node.
- Check the on-board voltage multimeter. Norm:
12.6–14.4 Vwith the engine running. - Inspect the wiring and connectors tires CAN (usually located Engine ECU or under the dashboard).
- Test sensors for correct readings (for example, compare data with MAF-sensor with reference values).
- Check the integrity of the ECU firmware (if you have access to diagnostic software like ODIS or WinOLS).
If you do not have experience working with diagnostic equipment, it is better to contact a car service with specialists in auto electrics. Incorrect actions (for example, resetting errors without correcting the cause) can make the problem worse.
Scan the car for additional errors
Measure battery and generator voltage
Inspect the CAN bus wiring for damage
Check connections of ECU connectors
Check sensor readings with standard values -->
Step-by-step instructions: how to fix the error
Depending on the cause, the solutions will be different. Below is a universal algorithm that will help in most cases.
1. Reset errors and reboot the system
Sometimes the error appears due to a temporary glitch. Try:
- 🔄 Reset errors via scanner OBD-II.
- 🔋 Remove the battery terminal for 10–15 minutes (this will lead to a reboot of the ECU).
- 🚗 Drive 10–20 km and rescan the vehicle.
If the error disappears, the problem was temporary. If it appears again, you need to dig deeper.
2. Tire inspection and repair CAN
If diagnostics showed problems with communication between blocks:
- 🔍 Find the tire location CAN (usually these are orange-black and orange-white wires).
- 🛠️ Check the integrity of the wires — whether there are any fractures, melting or corrosion.
- 🔌 Strip and crimp the contacts in the connectors (use contact lubricant, e.g. Liqui Moly Kontakt-Spray).
- 📶 Test the circuit with a multimeter - resistance between
CAN-HandCAN-Lthere must be54–66 Ohm.
3. Diagnostics and replacement of sensors
If the scanner showed errors of specific sensors (for example, P0100 - malfunction MAF-sensor):
- 🔧 Check the sensor connector for oxidation or damage.
- 📊 Compare readings with reference ones (for example, for MAF-sensor at 2000 rpm, the air flow should be ~10–15 kg/h).
- 🔄 Clean the sensor (for example, MAF can be washed CRC Mass Air Flow Sensor Cleaner).
- 🆕 Replace the sensorif it is faulty.
4. Updating or flashing the ECU
If the error appears after updating the firmware or resetting the settings:
- 💻 Revert to previous software version (if there is a backup).
- 🔧 Reflash the ECU using official software (for example, ODIS for VW/Audi).
- 📋 Reset adaptations (for example, via VCDS in the menu
Basic Settings).
If after resetting the battery terminal the error disappeared, but then returned, the problem is most likely in the hardware (wiring, sensors). If the error remains, the firmware or data conflict between blocks is to blame.
Common repair mistakes and how to avoid them
Many car owners are trying to fix «Invalid Data About Errors»** on their own, but make critical mistakes that only aggravate the problem. That's what can't do:
- ❌ Reset errors without diagnostics - this will not eliminate the cause, but only hides the symptom.
- ❌ Change sensors at random — first you need to make sure that this particular sensor is to blame (for example, by checking the signal with an oscilloscope).
- ❌ Update ECU firmware with “left” files - this can completely damage the unit.
- ❌ Ignore eating problems - if the battery is discharged or the generator is faulty, the error will be returned.
Critical error: if after resetting the battery terminal the car stops starting or additional errors come on (for example, U1121 - loss of communication with the immobilizer), immediately stop manipulations and contact a specialist. In some cases, key binding or ECU retraining is required.
If new errors appear after your actions (for example, related to the immobilizer or ABS), this is a sign that you have affected critical systems. In this case, it is better to roll back to the original state or contact service.
Car models most prone to error
Error «Invalid Data About Errors»** most often found in cars VAG groups (Volkswagen, Audi, Škoda, Seat) on the platform MQB, and also in some models BMW and Mercedes-Benz. The table below shows the most problematic models and typical causes:
| Make and model | Years of manufacture | Typical cause of error | Recommendations |
|---|---|---|---|
| Volkswagen Golf MK7 | 2012–2019 | Crashes after firmware update, bus problems CAN | Reflash the ECU, check CAN-H/CAN-L |
| Audi A3 8V | 2012–2020 | Data conflict between Engine ECU and ECU box | Reset adaptations via VCDS |
| Škoda Octavia A7 | 2013–2020 | Sensor malfunction MAF or CKP | Diagnostics of sensors, replacement if necessary |
| BMW 3 Series (F30) | 2011–2019 | Problems with the immobilizer after replacing the battery | Re-registering the battery via ISTA |
| Mercedes-Benz C-Class (W205) | 2014–2021 | Malfunctions Comfort ECU (for example, after installing an alarm) | Checking additional equipment |
If your car is on this list, the error is likely to appear «Invalid Data About Errors»** higher. In this case, it is recommended to regularly check the condition of the electronics, especially after installing additional equipment or updating the firmware.
Prevention: how to prevent errors from occurring?
The best way to deal with an error is to prevent it. Here are some tips to help avoid problems:
- 🔋 Monitor your battery status — a discharged battery or a faulty alternator can cause the ECU to malfunction.
- 🔌 Check your contacts regularly - oxidation or corrosion in bus connectors CAN and sensors often cause errors.
- 💻 Update the firmware only using official methods — do not use “fraudulent” files or uncertified software.
- 🚗 Be careful with additional equipment - alarms, multimedia or LED lamps may interfere with the on-board network.
- 🔍 Carry out diagnostics every 6–12 months - even if there are no visible problems, the scanner OBD-II can reveal hidden errors.
Special attention worth paying attention to cars after Road accident or body repair. Damage to wiring or control units may not appear immediately, but may take several months.
If you are installing additional equipment (such as an alarm or rear view camera), use voltage stabilizers and interference filters. This will help avoid conflicts with standard electronics.
FAQ: Frequently asked questions about the “Invalid Data About Errors” error
Is it possible to drive with this error?
Short-term - yes, but it is not recommended to delay diagnosis for a long time. The error indicates problems in electronic systems that can lead to more serious malfunctions (for example, sensor failure or ECU blocking).
Why does the error appear after replacing the battery?
When the battery is disconnected, the ECU adaptations are reset. If the new battery has a different voltage or capacity, the control unit may interpret the data incorrectly. In some vehicles (eg BMW or Mercedes) required battery registration through diagnostic software.
Could the error appear due to bad fuel?
No, directly - no. However, low-quality fuel can cause misfire or detonation, which will lead to sensor errors (for example, oxygen or detonation). These errors, in turn, can cause «Invalid Data About Errors»**.
What to do if an error appears after updating the firmware?
Return to the previous firmware version or reflash the ECU with official software. If the problem persists, the firmware files may have been damaged. In this case, only contacting a service with access to factory databases will help (for example, ODIS for VAG).
Can the error go away on its own?
In rare cases - yes, if it was caused by a temporary failure (for example, a power surge or a short-term loss of bus communication CAN). However, if the error appears regularly, it needs to be diagnosed.
If your question is not covered in this section, we recommend that you contact the thematic forum (for example, Drive2 or Club-Audi.ru) or to a specialist in auto electronics.
The “Invalid Data About Errors” error is not a death sentence, but a signal about the need for diagnostics. In 80% of cases, the problem is solved by cleaning the contacts, replacing the sensor or flashing the ECU. The main thing is not to ignore it and not to try to “reset” it without eliminating the cause.