What is a Honda Civic EH airbag control unit?
The Honda Civic EH airbag control unit is the central safety unit that activates all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of an accident. It continuously monitors sensors, stores important crash data, and ensures the proper functioning of the entire SRS system to ensure maximum passenger safety.
This module, also called the SRS control unit or airbag computer, is crucial for the passive safety of the Civic EH series (approximately 1996-2000). It processes signals from impact sensors and decides whether to deploy within milliseconds.
Malfunctions can activate the airbag warning light and compromise safety. A professional **Honda Civic EH airbag control unit repair** is essential.
Why is the Honda Civic EH airbag control unit defective?
A **Honda Civic EH airbag control unit** often fails because it stores crash data after an accident that can't be easily erased, or because internal electronic components fail due to age. Overvoltage or short circuits can also cause a **failure**, causing the system to cease performing its safety function.
Stored crash data blocks the control unit's function after an accident. This requires specialized repair, ideally a Honda Civic EH airbag control unit repair to erase the data.
Internal components can fail due to wear and tear or manufacturing defects. This leads to persistent error messages and the illumination of the airbag warning light.
Sometimes water damage or corrosion at the connections is the cause. Early diagnosis can prevent costly consequential damage.
Common error codes for Honda Civic EH airbag control unit repair
During **Honda Civic EH airbag control unit repairs**, specific error codes often occur that indicate internal defects, stored crash data, or communication problems with the module. These codes are crucial for accurately diagnosing the **defective** control unit and fixing the problem.
- B1000 → Control unit communication error → Data transmission malfunction within the airbag module.
- B1620 → Internal error in the airbag control unit → Defect in the internal electronics, replacement is often recommended.
- B1193 → Crash event storage detected → An accident was registered, crash data must be deleted.
- B1231 → Event threshold exceeded → A triggering event was detected by the control unit.
- B1239 → Airbag diagnostic sensor unit faulty → Internal sensor of the airbag control unit is **broken**.
- B1499 → Airbag control unit detects deployed airbag → The module has registered an airbag deployment.
- 5-1 → Internal SRS control module failure → A generic internal system error that requires a **Honda Civic EH airbag control module repair**.
- 9-1 → Internal failure of the SRS control unit → Similar to 5-1, indicates an internal **failure**.
- 65535 → Internal memory error in the control unit → Problems with the internal memory, often intermittent.
- B1650 → Recording of an accident only in the first stage (frontal) → Partial triggering or recording of a minor impact.
- B167000 → Full stage crash recording (frontal) → Full deployment or recording of a severe impact.
What part numbers are available for the Honda Civic EH airbag control unit repair?
For the **Honda Civic EH airbag control unit repair**, the OEM part number 77960-S02-A840-M3 is primarily relevant, as it is considered the exact and verified part number for models from approximately 1996 to 2000. A precise comparison is essential for correct function.
Part number **77960-S02-A840-M3** is the original Honda airbag control module for the Civic EH. A successful **Honda Civic EH airbag control module repair** always begins with verifying this number.
Other part numbers often fit other Civic generations and are not compatible with the EH model. The module is designed specifically for this series and must be an exact match.
In the case of a **defective** airbag control unit, the part number of the old part should be carefully compared with the replacement part number to ensure smooth compatibility.