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OBD killer self-learning for all OBD error codes
Function
OBD stands for on-board diagnostics and refers to the standardised diagnostic interface used in motor vehicles. The OBD-Killer is a compact electronic module that plugs directly into the vehicle's OBD diagnostic port. It monitors the engine control unit's fault memory in real time for possible entries. When a previously learned fault code is detected, the OBD-Killer clears it automatically before it creates a permanent warning message in the instrument cluster. Expected intermittent fault codes can therefore be handled selectively. If an unexpected fault occurs, the clearing process stops. This ensures that the fault memory remains fully functional.
Fault codes
The OBD-Killer is self-learning and can automatically detect and clear learned emissions-related fault codes. During installation, the OBD-Killer learns the stored codes as expected faults. This process can be repeated as often as required in order to add further fault codes. Manufacturer-specific codes that do not comply with the generic OBD standard can also be cleared. As soon as a fault becomes pending that has not been learned, the OBD-Killer no longer intervenes. This means that the fault memory and check engine light remain fully functional for all other warning messages. Typical applications include fault codes P0401 (EGR), P0420 and P0430 (catalyst), and P0234 (turbocharger overboost condition).
Application
The OBD-Killer can generally be used in vehicles from model year 2008 that comply with or correctly implement the European EOBD standard. Some earlier vehicles already support the required standard. These vehicles can often be identified by populated pins 6 and 14 on the diagnostic port. The engine may run on diesel, petrol, natural gas or LPG. Some engine control units do not support clearing fault codes via the OBD protocol while the engine is running. The OBD-Killer is not suitable for these vehicles. Please check your vehicle's compatibility before ordering.
Installation
Simply plug the OBD-Killer into the vehicle's OBD port.
Changing vehicles
The OBD-Killer can be reused in another compatible vehicle. When it detects a new vehicle identification number after installation, the previous learned values are reset automatically. The device then returns to its delivery state and can be learned for the new vehicle.
Installation & commissioning
The OBD diagnostic port is located within approximately one metre of the steering wheel. The overview below shows the possible positions of the diagnostic port for your vehicle manufacturer. To install the unit, simply plug the OBD-Killer into the OBD diagnostic port.
Important during initial installation: The expected fault codes must be active and the engine warning light must be illuminated. Only then can the OBD-Killer learn these fault codes as expected faults.
1. Start the engine and plug in the OBD-Killer
Start the engine and plug the OBD-Killer into the diagnostic port. Depending on the vehicle, activation does not always take place immediately after the engine is started. On vehicles with intelligent energy management, it may be necessary to drive a few kilometres under normal driving conditions until the vehicle electrical system switches to active charging mode.
Important technical information about the vehicle voltage: The OBD-Killer only becomes active when the vehicle voltage reaches at least 13.3 volts while driving. If this value is not reached, activation may not occur. The vehicle voltage can be checked directly at the vehicle battery.
2. Check communication with the engine control unit
When the OBD-Killer is active, the yellow LEDs flash in relation to the engine speed. This indicates communication with the engine control unit.
On some modern vehicles, communication only begins after a short drive. Therefore, drive the vehicle until it reaches operating temperature or for a few kilometres under normal driving conditions.
3. Learning function during initial installation
During initial commissioning, the OBD-Killer stores the active fault codes in its internal memory. These fault codes are then treated as expected faults.
The learning process can be repeated by briefly unplugging and reconnecting the OBD-Killer. This allows additional fault codes that occur later to be stored in the OBD-Killer memory. The relevant fault codes must be active and the engine warning light must be illuminated.
4. Meaning of the LED indicators
Yellow LEDs: Flashing indicates active communication with the engine control unit.
Red LED illuminates briefly: An expected fault code has been cleared.
Red LED flashes continuously: The engine control unit is refusing to clear the fault in the current operating state. The OBD-Killer automatically repeats the clearing process until the engine control unit confirms that the fault code has been cleared successfully.
In a small number of cases, the engine control unit permanently refuses to clear the fault. This means that either the fault is permanent or the vehicle's engine control unit does not support clearing fault codes while the engine is running.
Green LED after the engine has been switched off: The green LED flashes every five seconds. The OBD-Killer checks whether the engine has been restarted.
5. Installation position and extension cable
Depending on the vehicle, the OBD diagnostic port may be installed in different locations. On some vehicles, it is advisable to use our extremely flat extension cable if the OBD-Killer would otherwise remain visibly protruding or if the cover cannot be closed.
A: Audi, Bentley, Bugatti, Cupra, Jaguar, Lamborghini, Porsche, SEAT, Skoda, Volkswagen, Volkswagen Commercial Vehicles
B: Abarth, Alfa Romeo, Citroën, Dacia, DS Automobiles, Fiat, Ford, Honda, Hyundai, Infiniti, Kia, Lancia, Land Rover, Mazda, Nissan, Opel, Peugeot, Renault, Subaru, Suzuki, Toyota
C: Acura, BMW, Buick, Cadillac, Chevrolet, Chrysler, Dodge, GMC, Jaguar, Jeep, Lexus, Lincoln, MINI, RAM, Rolls-Royce, Subaru
D: Aston Martin, Citroën, Ferrari, Honda, Lotus, Maserati, McLaren, Mitsubishi, Toyota
E: Ferrari, Lamborghini, Lada, Maserati, McLaren, Opel, Peugeot, Porsche, Renault, SEAT, Volkswagen
F: Dacia, Jaguar, Land Rover, Renault
G: BMW, Isuzu, Iveco, Lada, MAN, Maybach, Mercedes-Benz, Smart, Volvo
H: Audi, BMW, Chevrolet, Chrysler, Citroën, Ford, Kia, Lexus, Mercedes-Benz, MINI, Opel, Peugeot, Porsche, Renault, Saab, Skoda, Subaru, Suzuki, Toyota, Volkswagen, Volvo
I: Alpine, Genesis, Lada, MG, OMODA, Opel, Peugeot, Renault, SEAT
J: Chery, GWM, Hongqi, Jetour, Opel, Renault
Note: The positions shown are intended as a guide. The location of the OBD diagnostic port may vary depending on the vehicle model, year of manufacture and equipment.
Changing vehicles
When the OBD-Killer is moved to another vehicle, it recognises the new vehicle identification number and resets all learned values. The unit then returns to its original delivery state and can be taught again on the new vehicle.
Note: A detailed installation manual is supplied with the OBD-Killer. The information on this page corresponds to the essential installation instructions in the current manual.