Decode your vehicle’s diagnostic trouble codes (DTCs) with our comprehensive OBD2 DTC database! We provide detailed explanations for U-Codes, B-Codes, C-Codes, and P-Codes, empowering you to understand and address potential issues. Quickly identify the meaning of any code and take the necessary steps to resolve problems. This resource is designed to help both DIY mechanics and professional technicians.
EMS 8192 Blocks: 2098557, 2098556, 2110163, 2110160 Title: Coolant temperature sensor Fault: The voltage in the circuit exceeded the permissible level. The reasons: Possible reasons: Notes: The coolant temperature sensor, the charge air pressure sensor, the charge air temperature sensor, the fuel line pressure sensor and the fan speed sensor have a common power supply. In the event of a fault in one of the sensors, …
EMS 644 Blocks: 2098547, 2098546, 2098545, 2096902, 2096901, 9000000, 2089202, 2089201, 2089200 Title: Cylinder balance (min. Or max.), Cylinder 8 Fault: The cylinder balance values have reached their maximum and minimum limits. The reasons: The cylinder does not output the same power as the other cylinders for the following reason: nozzle leakage injector restrictor valve defective. low compression The cause may be air in the …
EMS 5120 Blocks: 2098547, 2098546, 2098545, 2096902, 2096901, 9000000, 2089202, 2089201, 2089200 Title: EGR valve with a pneumatic cylinder control Fault: When an EGR valve receives a request to go to the closed position, the EGR valve position sensor T124 indicates an open position (> 8%) affecting engine performance (power and emissions). The reasons: Notes: After starting the engine, the engine control unit performs an …
EMS 4505 Blocks: 2098547, 2098546, 2098545, 2096902, 2096901, 9000000, 2089202, 2089201, 2089200 Title: Cylinder 1, code version failed Fault: The injector code does not contain acceptable values. The reasons: The engine control unit cannot process the injector code version. Notes: As long as the DTC remains active, the control unit does not perform an individual adaptation of the injectors. The control unit cannot adjust process tolerances. This …
EMS 4171 Blocks: 2110164, 2110165, 2110166, 2110162, 2110116 Title: SCR – Nitrogen oxides (NOx) after catalytic converter Fault: The measured amount of nitrogen oxides is different from what should be. The reasons: Notes: The fault affects the emission of nitrogen oxides (NOx) by the car, and a warning lamp lights up in the instrument cluster, warning of a high level of pollutants. Elimination: EMS 4172 …
EMS 1316 Blocks: 2098547, 2098546, 2098545, 2096902, 2096901, 9000000, 2089202, 2089201, 2089200 Title: Oil pressure sensor Fault: The signal from the oil pressure sensor in the engine lubrication system is below the normal value. This means that the oil pressure, measured at a certain speed, is lower than normal. The reasons: A possible reason is that one of the following valves in the lubrication system is …
EMS 11175 Blocks: 2110164, 2110165, 2110166, 2110162, 2110116 Title: Information code for NOx control – cannot be deleted Fault: This DTC does not indicate any malfunction. It is intended only to inform the authorities, and should not be used for troubleshooting. The reasons: Notes: DTC cannot be cleared. The fault code is automatically deleted if the fault did not occur within 400 days. Elimination: No action …
EMS 11 Blocks: 2098557, 2098556, 2110163, 2110160, 2110164, 2110165, 2110166, 2110162, 2110116 Title: Control block Fault: Incorrect or unreliable data. The reasons: Internal malfunction in the control unit. Notes: While there is a fault, the car cannot start moving. Elimination: Erase the trouble codes from the memory, then turn off the ignition with the ignition key, and then turn it on again. Does the trouble code …
1 Cruise control The voltage in the cruise control switch circuit is too high or too low. Short circuit or open circuit. Cruise control switch malfunction possible. While this DTC is active, cruise control and manual idle speed control are not possible. Check the cruise control switch, including wiring and electrical connectors. 3 Radio controls The voltage in the circuit located on the steering wheel …
17 Wheel speed Low level signal from the left wheel of the front axle. The distance between the wheel speed sensor and the driver disk is too large. ABS and TC cease to function. The warning light is on. Check the wheel bearing play and that the wheel speed sensor is damaged. Adjust the position of the wheel speed sensor. The distance to the master …
About OBD2 Diagnostic Trouble Codes (DTC)
OBD2, short for On-Board Diagnostics 2, is a standardized diagnostic system found in most vehicles manufactured after 1996. It's a powerful tool that allows you to access and interpret information about your vehicle's systems, including any potential issues. OBD2 Diagnostic Trouble Codes (DTCs) are numeric codes that provide specific information about detected problems within your vehicle's systems.
Decoding the Codes
OBD2 DTCs are formatted as a 5-digit code, typically starting with a "P" for powertrain-related issues. The first digit represents the area of the vehicle system affected, the second digit indicates a more specific subsystem within that area, and the last three digits identify the specific fault.
U0XXX: Network Communication (communication issues between modules)
Using a Scan Tool
To access DTCs, you'll need an OBD2 scan tool. These devices plug into the OBD2 port, typically located under the dashboard, and can display DTCs and other vehicle data.
Interpreting DTCs
Once you have the DTCs, you can use an online database or a repair manual to interpret their meaning. Understanding the specific fault identified by the code can help you diagnose and troubleshoot problems.
Important Notes:
DTCs are just the beginning of the diagnostic process. They point to potential problems, but further investigation may be necessary to pinpoint the exact cause.
Always consult a qualified technician for complex repairs, as improper troubleshooting can lead to further damage or safety hazards.
Where to find more information:
Online Databases: Numerous websites offer free and paid databases for decoding OBD2 DTCs.
Repair Manuals: A specific repair manual for your vehicle model can provide detailed information about DTCs and troubleshooting procedures.
Professional Mechanics: A certified mechanic can help you diagnose and repair problems associated with DTCs.
OBD2 is a powerful tool for understanding your vehicle's health and performance. By understanding the basics of OBD2 and DTCs, you can take a more proactive approach to vehicle maintenance and repair.
