OBD-II Trouble Code

Nowadays, cars are equipped with electronic control units that control the operation of the whole system, while electronic units keep in touch with most of the sensors installed in your car and collect information about their operation, including OBD2 errors.


Thus, with the help of an auto scanner, you have the opportunity to connect to the electronic unit and check the defective car for the violation of the sensors and the system as a whole. At the same time, the autoscanner provides OBD 2 error codes to its screen, if any.


However, the OBD codes by themselves do not say anything and in order to decode the OBD codes it is necessary to have at hand a thick reference book in which the decoding of OBD 2 error codes is described in detail. Even if such a directory somehow finds itself at the right time in the right place , the search for the required OBD 2 will be delayed for a long time. This is not very convenient, and to find the OBD 2 codes in Russian is quite problematic.


On our site there are almost all known error codes of OBD, as well as a detailed OBD decoding of codes. The convenience and ease of use of the service allows you to easily recognize the OBD error codes of your car. In this case, you just need to set the search for the page for the error code OBD 2 and you will instantly move to the desired, detailed description of the OBD 2. You can read the errors with the universal adapters elm327. With the use of our service, the process of determining the malfunction of your car is greatly simplified, while you save a lot of time and spend less effort.

The most commonly used abbreviations for OBDII

  • AFC - Air Mass Flowmeter
  • ALDL - Diagnostic connector. So used to be the diagnostic connector for GM cars, as well as the scanner connector; can also be used as the name of any OBD II signals
  • CAN - Controller
  • CARB - California Council for Atmospheric Resources
  • CFI - Central Fuel Injection (TBI)
  • CFI - continuous fuel injection
  • CO  - is carbon monoxide
  • DLC - Diagnostic connector
  • Driving Cycle - The sequence of starting, warming up and driving the car, during this cycle, all OBD II functions are tested
  • DTC - trouble code
  • ECM - Engine Control Module
  • EEC - Electronic engine management
  • EEPROM or E2PROM - Programmable memory, read-only
  • EFI - electronic fuel injection
  • EGR - Exhaust gas recirculation
  • EMR - electronic unit for reducing the angle of ignition
  • EPA - Council for the Protection of the Environment
  • ESC - Electronic ignition control
  • EST - Electronic ignition timing adjustment
  • Fuel Trim - balancing the composition of the mixture
  • HC - is a hydrocarbon
  • HEI - ignition
  • HO2S - Heated Oxygen Sensor
  • ISO 9141 - international standard for the OBDII connector
  • J1850PWM - protocol for the OBD II connector, installed according to the SAE standard
  • J1850VPW - protocol for the OBD II connector, installed according to the SAE standard
  • J1962 - standard for the diagnostic connector OBD II, installed according to the SAE standard
  • J1978 - SAE standard for OBD II scanners
  • J1979 - SAE standard for diagnostic modes
  • J2012 - SAE standard, approved by the EPA, for messages when testing the exhaust system
  • MAF - air flowMAP - absolute pressure in the intake manifold
  • MAT - inlet manifold air temperature
  • MIL - fault indicator lamp. Lamp "Check Engine Light" on the instrument panel.
  • NOx - Nitric Oxide
  • O2 is oxygen
  • OBD - Diagnostics
  • OBDII or OBD II - is an advanced standard for vehicle diagnostics in the USA after 1-1-96
  • Parameters - Parameters for OBD II diagnostics
  • PCM - Transmission Control Module
  • PCV - Carter
  • Proprietary Readings - On-board computer parameters that are not required for OBD II diagnostics, but can be used to diagnose faults of different types of vehicles.
  • PTC - trouble code
  • RPM - revolutions / minute
  • Scan Tool - scanner
  • SES - service lamp of the engine on the instrument panel
  • SFI - sequential fuel injection
  • Stoichiometric Ratio - Coefficient of combustion of fuel
  • TPS - Throttle Position Sensor
  • VAC - vacuum
  • VCM - central control unit for the car
  • VIN - vehicle identification number
  • VSS - speed sensor
  • WOT - open throttle
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