Rover Range Rover P38A Airbag Control Unit Repair

What is a Rover Range Rover P38A airbag control unit?

The Range Rover P38A airbag control unit is the central safety unit in the vehicle that activates all occupant restraint systems in the event of an accident. It precisely monitors sensors, stores relevant crash data, and ensures the immediate and proper deployment of all airbag modules in the vehicle to provide maximum occupant safety.

This electronic module is critical to the functionality of your Range Rover P38A's passive safety system. It continuously processes signals from acceleration and pressure sensors.

In the event of an impact, the control unit decides in milliseconds whether the airbags and belt tensioners need to be deployed.

Why is the Rover Range Rover P38A airbag control unit defective?

A Range Rover P38A airbag control unit often fails due to internal memory errors, the inability to erase old crash data, or an unstable power supply. This typically leads to safety system failure and requires professional repair or replacement at a workshop.

Common causes of failure are age-related wear and tear on the electronics or damage caused by overvoltage.

After an accident, crash data often remains stored in the module, which makes reprogramming or a targeted Rover Range Rover P38A airbag control unit repair necessary, as otherwise the airbag warning light will not go out.

Non-functioning communication with the diagnostic device can also indicate a defective control unit.

Common error codes for Rover Range Rover P38A airbag control unit repair

When repairing the Range Rover P38A airbag control unit, specific error codes are crucial for identifying the exact cause of a malfunction. These codes directly indicate problems within the control unit itself, such as communication errors, voltage disturbances, or internal module defects, enabling a precise diagnosis.

• B1000 → Control unit communication error → Cause: Problem with data transmission between diagnostic device and SRS module.
• B1001 → Airbag control unit voltage supply error → Cause: Too low or unstable vehicle electrical system voltage at the control unit.
• B1010 → Internal memory error in the airbag module → Cause: Defect in the internal memory unit of the control unit.
• B1040 → EEPROM error in the control unit → Cause: Damage or error in the EEPROM memory of the module.
• B1050 → Error deleting crash data → Cause: Stored crash data cannot be deleted after an accident.
• B1080 → Internal diagnostic error → Cause: The control unit detects an error in its own diagnostic functions.

Reading these error codes is an essential step in the diagnosis and subsequent Rover Range Rover P38A airbag control unit repair.

Specialized diagnostic equipment is essential for precisely determining these system errors in order to repair an airbag system failure.

What part numbers are available for the Rover Range Rover P38A airbag control unit repair?

For the Rover Range Rover P38A airbag control unit repair, precise knowledge of the part numbers is essential to ensure compatibility and functionality. The only 100% verified original OEM part number for the Rover Range Rover P38A airbag control unit is AMR4905, which comes directly from Land Rover and ensures a precise fit.

This OEM part number is specifically designed for the P38A series and is carried by many specialist Land Rover parts dealers.

Although AH2214D374AG is listed as a related module, its compatibility with the P38A is not fully confirmed and should be critically checked for a Rover Range Rover P38A airbag control unit repair.

When purchasing replacement parts, always rely on verified part numbers to avoid future errors or repeated repairs.