Phone: +49 (0) 2273 99 16 424

Our Services

Repair and replacement of ABS ECUs, engine ECUs, airbag ECUs, transmission ECUs, truck ECUs and more.

Comprehensive Expertise in ECU Repair

Our team has deep expertise in ECU repair. Over the years, we have successfully restored defective ECUs from various manufacturers. By using state-of-the-art technologies, we can accurately diagnose and fix errors.

What is meant by ECU repair?

An ECU repair, offered by Revonik GmbH, includes the professional restoration of an electronic control unit in vehicles such as cars, trucks, and motorcycles. This service is a cost-efficient alternative to replacing the ECU and is carried out by our experts with specialized experience in automotive electronics. For a repair, we require your component and the order form where all necessary data for a repair is recorded.

Cost-Effective and Sustainable Solutions

Repairing an ECU is often a cost-effective alternative to expensive replacement. At Revonik GmbH, every unit is carefully inspected and repaired, so it does not need to be reprogrammed or relearned. This not only saves time but also resources. Whether engine ECUs, ABS ECUs, transmission or airbag control units, or even instrument clusters – we are the experts in repair.

Specialist for Various Manufacturers

Whether Audi, BMW, VW, Opel, Ford, Peugeot, Citroën or other brands – we provide individual repair solutions for a wide range of manufacturers, not only for cars but also for trucks and motorcycles. Our repairs ensure that your vehicle continues to operate optimally without the risk of breakdowns.

Long-Term Warranty and Trust

With a ✅ 2-year warranty ✅ on every repair, Revonik GmbH emphasizes the confidence in the quality of our work. Our customers benefit from long-lasting and reliable functioning of their ECUs.

Error Cause Detection and Immediate Repair

Our modern diagnostic technology enables us to quickly identify errors and their causes. This allows us to intervene precisely and carry out the necessary repairs to restore optimal vehicle performance.

Professional ABS Control Unit Repair

If the control unit of the anti-lock braking system (ABS) has issues, it can significantly impair the functionality of your braking system. Road safety has the highest priority, which is why prompt and professional repair of the ABS control unit is essential. Our dedicated team is at your and your workshop’s disposal as recognized experts for ABS, ESP, and ASR control units.

ABS Steuergerät Reparatur

What is an ABS Control Unit?

The anti-lock braking system (ABS) is crucial for preventing the wheels from locking during braking and keeping your vehicle controllable, even during emergency braking. This complex system is precisely controlled by an ABS control unit. Our expert team checks and repairs ABS control units for various vehicle brands, including Audi, BMW, VW, and many more, following careful diagnosis.


Recognizing ABS Control Unit Problems

Identifying problems with the ABS system is usually straightforward. The ABS/ESP warning light on the dashboard will typically illuminate. Customers also often notice changes in their vehicle's braking behavior. A diagnostic check will reveal a corresponding error code. Causes and symptoms of an ABS control unit failure. ABS control unit problems can be due to a variety of causes, including:


Costs of ABS Control Unit Repair

Replacing an ABS control unit can be expensive, especially if a new module is required. Costs vary depending on the vehicle type but can easily reach four figures. For older vehicles like the Audi A3, a repair may be more cost-effective than a complete replacement. With our support, repair costs for VW, Audi, Skoda, BMW, Peugeot, Ford, Opel, and other brands can be reduced by 40 to 60% or even more. Contact us to learn more about our offers for you and your workshop.


ABS Control Unit Repair at Revonik

Benefit from our comprehensive expertise. As control unit specialists, we offer not only competitive prices but also excellent service. We are happy to advise you. We also guarantee a fast repair of your ABS control unit, so your vehicle can be back on the road safely in no time. Are you looking for parts to repair your vehicle? Take a look at our most popular categories: Mercedes-Benz ABS control units, Peugeot ABS control units, Ford ABS control units, Volkswagen ABS control units, Opel ABS control units, BMW ABS control units, Skoda ABS control units, and Audi ABS control units. Trust Revonik for reliable ABS control unit repair.


Professional Engine Control Unit Repair

Control unit problems often pose major challenges for workshops. Given the high costs of purchasing new control units, repair is an attractive option. External expertise can be of valuable assistance here.

ABS Steuergerät Reparatur

Engine Control Unit Repair

When an ECU fails, it's common practice to replace the defective component with a new one. However, you can offer your customers an additional level of service by utilizing ECU repair specialists. This not only reduces costs but also contributes to reducing electronic waste and encourages positive referrals.


Control Units (ECU): Structure and Function

Control units are used in a variety of applications that require precise electronic control. Depending on the vehicle type and age, various control units are installed that control far more than just the ignition. The engine control unit processes signals and performs various functions related to the ignition, fuel injection, and exhaust system.


Control Unit Defective? Common Symptoms and Causes

The repair approach depends on the cause of the control unit problem. The first step is to determine the cause of the problem.


Frequent Causes of Control Unit/ECU Damage

Poor solder joints and defective microcomponents are often responsible for engine control unit failure. Investigations can reveal wiring or supply problems. A short circuit in the wiring or a sensor can cause the control unit to burn out.


Defects in Control Units – Typical Problems

The errors that occur vary depending on whether the engine control unit or another component is affected. The following problems are frequently observed:
Rough engine running, misfiring, combustion misfiring;
communication failure – no connection to the control unit possible;
vehicle won't start or stalls while driving;
check engine light illuminates, vehicle jerks or sputters;

Control Unit Repair – Cost Overview

The cost of repairing a control unit varies depending on the type of defect. We can offer you a competitive quote compared to the cost of a replacement. In many cases, the cost can be reduced by half or even a quarter.


Professional Airbag Control Unit Repair

After accidents or other damage, airbag control units are often expensively replaced with new parts. But did you know there is a cost-efficient and sustainable alternative?

ABS Steuergerät Reparatur

Functions of the Airbag Control Unit

The airbag control unit plays a crucial role in the safety of your vehicle by:

  • Detects and processes information from sensors
  • the required ignition circuits for the gas generator are activated
  • ensures the energy supply via a capacitor
  • so that the airbag system works even if the battery fails
  • the entire airbag system is monitored for technical errors
  • Errors stored in the error memory
  • activates the airbag warning light on the dashboard and detects accidents

Our experts can fix a wide range of problems, including:

  • Deleting crash data/accident data
  • Software error
  • Hardware error
  • Coding/Configuration
  • Water damage
  • short circuit

Cost Overview

The cost of repairing a control unit varies depending on the type of defect. Compared to the cost of a replacement, we can offer you a highly competitive quote. In many cases, the cost can be reduced by up to 75%.


Airbag Control Unit Repair at Revonik

At Revonik, we specialize in the repair of airbag control units. Our over ten years of expertise guarantees fast and cost-effective processing of your order. See for yourself and benefit from our expert advice and an additional two-year warranty. We offer repair services for airbag control units from all manufacturers, including Audi, VW, BMW, Mercedes, Ford, Bosch, Siemens, and many more. Trust Revonik for your airbag control unit repair needs.


Instrument Cluster Repair

The instrument cluster or speedometer in modern vehicles monitors far more than just speed and mileage. With increasing technological sophistication, it is becoming more and more challenging for workshops to diagnose and repair defective instrument clusters.

ABS Steuergerät Reparatur

Common Causes of Instrument Cluster Damage

The main causes of instrument cluster repairs are often due to temperature fluctuations. This can lead to the following problems:

  • Solder joints come loose
  • LEDs are damaged
  • Processors fail
  • Microcomponents are damaged by voltage peaks

The Instrument Cluster: Structure and Function

The instrument cluster provides drivers with a quick overview of key vehicle data. Information on speed, fuel level, and multimedia applications converge here. Visual and acoustic signals help focus attention on what's important. The complex structure, with its numerous soldered connections, LEDs, and processors, forms the heart of the instrument cluster. Repairing an instrument cluster therefore requires precise fault diagnosis.


Symptoms and Causes of Instrument Cluster Defects

A speedometer repair is necessary when displays no longer function correctly, warning signals sound at inappropriate times, analogue displays fail, control lights illuminate, the instrument cluster display remains dark or even fails completely.


Repair Options for a Defective Instrument Cluster

The next steps depend on the type of error. A defective acoustic sensor can be repaired quickly. Even large-scale pixel defects can often be repaired. Speedometer repair in older vehicles may require more time for troubleshooting, but is usually more cost-effective than replacing a new part.


Express Repair within 48 Hours!

Our many years of experience and commitment to the highest quality have earned us an excellent reputation as a trusted partner in the industry. For a small extra fee, we also offer express repair/testing within just 48 hours, giving our customers maximum flexibility. Rely on our expertise and know-how when it comes to repairing your vehicle control units. Contact us today to learn more about our services and how we can help you get your vehicles back on the road quickly. Revonik – your reliable choice for vehicle control units in NRW.

The CPC Control Unit: Structure and Function

The Central Powertrain Controller (CPC) is a critical component in modern commercial vehicles (trucks and buses). Equipped with a powerful multi-core processor and an open networking architecture based on the proven Engine Management System 3 (EMS3) engine control platform, the CPC handles comprehensive control and communication between the diverse control units throughout the vehicle's powertrain. This intelligent system ensures seamless interaction and optimal performance to deliver a smooth driving experience.


Symptoms of a Defective CPC Control Unit:

  • Engine failure or starting problems: A faulty CPC can cause the engine to fail to start or to fail while driving. This could indicate problems with the fuel injection, ignition, or other critical engine components.
  • Idling problems: Rough or unstable idling behavior may indicate faulty control of the idle speed by the CPC control unit.
  • Shifting problems: In vehicles with automatic transmissions, a defective CPC can cause shifting problems, such as jerky shifting or delays when changing gears.
  • No communication with the control unit, CAN bus problems

Cost Overview

The cost of repairing a control unit varies depending on the type of defect. Compared to the cost of a replacement, we can offer you a highly competitive quote. In many cases, the cost can be reduced by up to 75%.


Airbag Control Unit Repair at Revonik

At Revonik, we specialize in the repair of airbag control units. Our over ten years of expertise guarantees fast and cost-effective processing of your order. See for yourself and benefit from our expert advice and an additional two-year warranty. We offer repair services for airbag control units from all manufacturers, including Audi, VW, BMW, Mercedes, Ford, Bosch, Siemens, and many more. Trust Revonik for your airbag control unit repair needs.


The Most Common Control Unit Error Codes

ABS Control Unit Error Codes

  • No communication with the control unit
  • No brake pressure on one of the front wheels
  • No brake pressure on one of the rear wheels
  • C0110 Return pump
  • U3000 Control unit internal error Control Module
  • Pump motor runs continuously
  • Vehicle pulls to the right or left during emergency braking
  • A valve for the corresponding brake circuit in the hydraulic block does not open
  • Pump motor error
  • C056D Control unit malfunction
  • C1205 Valve circuit faulty
  • C0020 ABS pump motor control
  • No brake pressure on the front right wheel
  • C1063 Faulty valve relay
  • C00201C Hydraulic pump out of tolerance
  • Faulty pump motor
  • Wheel speed sensors displayed as faulty
  • CAN bus malfunctions
  • 01435 Brake pressure sensor G201
  • 059B Brake pressure sensor G201
  • 4020 Pump motor
  • 5219 Pump motor
  • C1110 Control unit component defective
  • C1111 Pump motor malfunction
  • DF017 Control unit defective
  • 50C3 Control unit defective
  • C10C3 Control unit defective
  • 01276 / 04FC ABS hydraulic pump
  • C1061 Pump motor/Relay faulty
  • ABS pump runs continuously
  • C1246 Faulty brake pressure sensor
  • C1288 Pressure switch - Circuit faulty
  • C0044 Brake pressure sensor circuit A faulty
  • C1350 Valve relay / Solenoid valves - internal error
  • C1251 Pump motor / Circuit fault
  • No brake pressure on one of the wheels
  • No brake pressure on the front left wheel
  • No brake pressure on the rear left wheel
  • Vehicle pulls to the left or right during emergency braking
  • Pump motor defective
  • Hydraulic pump out of tolerance
  • 01130 / 046A ABS operation implausible signal sporadic
  • 16349 / 3FDD Control unit defective
  • 16355 / 3FE3 Control unit defective
  • 16352 / 3FE0 Control unit defective
  • 01279 / 04FF Longitudinal acceleration sensor faulty
  • 01423 / 058F Lateral acceleration sensor faulty
  • 5DF0 Pump motor power supply
  • 5DF1 Pump motor power supply
  • 24048 Pump motor malfunction
  • 24049 Pump motor circuit faulty
  • 5DF5 Control unit internal error
  • C1205 Valve relay circuit faulty
  • C1219 Supply voltage for pump motor
  • 5001 Internal fault in component N30/4
  • 5944 Control unit internal error
  • 5945 ESP control unit internal error
  • 7266 CAN communication with adaptive cruise control
  • C1001 Control unit internal error
  • C1906 - 5906 - 22790 Internal error in ESP control unit
  • C1944 - ESP control unit internal error
  • C1945 - 5945 - 22853 ESP control unit internal error
  • C1310 Pump motor / Relay faulty
  • Wheel speed sensors signal implausible / No wheel speed sensor signal
  • 52-1 Pump motor circuit relay open
  • C00201C Pump motor
  • C2116 Pump motor supply voltage
  • 505004 Control unit defective
  • 401001 Control unit defective
  • C1050 ESP control unit overheating
  • C0010 ESP control unit defective
  • DTC402012 Pump circuit
  • DTC402071 Pump circuit
  • DTC40201C Pump circuit
  • C0020 ABS pump motor circuit faulty
  • F010 ABS pump motor circuit faulty
  • No entry in fault memory
  • Valve for corresponding brake circuit in hydraulic block does not open
  • Various wheel speed sensors shown as faulty
  • P0500 Vehicle speed sensor - malfunction
  • Various wheel sensor faults
  • ABS / ESP light permanently on
  • 01130 ABS operation implausible signal
  • 059B Brake pressure sensor G201 defective
  • 01435 Brake pressure sensor G201 defective
  • 5DF5 Control unit internal error (Gutmann fault code 24053)
  • 5E24 Brake pressure sensor faulty
  • C1DF5 Control unit internal error
  • 24096 Pressure sensor 1 malfunction
  • 5E20 Pressure sensor 1 electrically defective
  • C0131 Pressure sensor - Circuit malfunction
  • C0121 Valve relay circuit malfunction
  • C1301 Brake pressure sensor - Short to positive
  • C1302 Brake pressure sensor
  • C1028 Fault in master cylinder pressure sensor circuit
  • C1267 Control unit internal error
  • 66-01 Brake pressure sensor faulty
  • DF088 Brake pressure sensor circuit
  • C1124 Faulty pressure sensor

Engine Control Unit Error Codes

  • Control unit defective
  • Engine control unit malfunction
  • EGR valve (N18) - Open/Short to ground
  • Glow plug relay (J52) - Open/Short to ground
  • Changeover valve for intake manifold flap (N239) - Open/Short to ground
  • Intake manifold flap motor - V157 Open/Short to ground
  • Boost pressure control valve (N75) - Open/Short to ground
  • Fuel pump relay - Open/Short to ground
  • Control unit - EEPROM error
  • ECM/PCM main relay control – Open circuit
  • EEPROM or faulty coding
  • Control unit internal error
  • Stored under thermal influence
  • Main relay shutdown too early
  • Main relay short to ground/positive or open circuit
  • Ignition coil 2 - Circuit fault
  • Injectors 1,2,3
  • Ignition circuit cylinder 4 - Burn time too short
  • 5V reference voltage circuit 1 - Malfunction
  • Ignition circuit cylinder 3 - Burn time too short
  • Ignition circuit cylinder 2 - Burn time too short
  • Ignition circuit cylinder 1 - Burn time too short
  • Sensor supply voltage 3 out of range
  • Ignition coil 1 - Circuit fault
  • Output for relay terminal 87 has electrical fault or open circuit
  • Ignition coil 3 - Circuit fault
  • Sensor supply voltage 1 out of range
  • Ignition coil 4 - Circuit fault
  • PCM - Powertrain control module - ROM fault
  • PCM - Internal main processor, control unit – Performance
  • P0605 Control unit defective; internal ROM error
  • P0351 Ignition coil A Primary/Secondary malfunction
  • P0352 Ignition coil B Primary/Secondary malfunction
  • Sensor supply voltage 2 out of range
  • Injectors 4,5,6 or internal fault
  • 5V reference voltage circuit 2 - Malfunction
  • 5V reference voltage circuit 3 - Malfunction
  • Sensor reference voltage C too high
  • Control unit defective
  • Sensor reference voltage B too high
  • Fan relay 2 circuit signal too low/open
  • Fan relay 3 circuit signal too low/open
  • Unit injector cyl. 1: No valve lift
  • Unit injector cyl. 2: No valve lift
  • Unit injector cyl. 3: No valve lift
  • Return circuit bank 1 injectors short to ground
  • Unit injector cyl. 4: No valve lift
  • Unit injector cyl. 5: No valve lift
  • Unit injector cyl. 6: No valve lift
  • Return circuit bank 2 injectors short to ground
  • Sensor reference voltage A too high
  • Control line for ignition coil cylinder 6 short to ground
  • EGR valve faulty
  • P0605 Control unit defective
  • Fuel metering valve (N290) - Electrical fault in circuit
  • Fuel metering valve (N290) - Short to ground
  • Fuel pressure control valve (N276) - Signal too high
  • Fuel pressure regulator short to positive
  • Mass air flow sensor voltage high
  • Intake air temperature sensor voltage high
  • Injector 1 malfunction/open circuit
  • Injector 2 malfunction/open circuit
  • Injector 3 malfunction/open circuit
  • Injector 4 malfunction/open circuit
  • Idle speed control valve voltage high
  • Fan relay 1 circuit signal too low/open
  • Main relay
  • Throttle control malfunction
  • Mass air flow sensor
  • Throttle actuator malfunction
  • Control unit defective - Memory checksum
  • Electronic throttle actuator malfunction
  • Throttle potentiometer 1 voltage high
  • Throttle potentiometer 2 voltage high
  • Fuel pump relay
  • Crankshaft sensor no/incorrect signal
  • Camshaft sensor no/incorrect signal
  • Engine control unit defective
  • Injector supply B - Electrical fault
  • Injector supply A - Electrical fault
  • P0659 Sensor reference voltage A too high
  • AC pressure sensor
  • Coolant temperature sensor 2
  • No communication with control unit, further errors on request

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