Citroën Jumper II airbag control unit repair

What is a Citroën Jumper II airbag control unit?

The Citroën Relay II airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle. This unit is critical for occupant protection and must be professionally repaired or replaced if faulty or after an accident.

This electronic control unit is the intelligence behind the airbag system. It detects collisions in milliseconds and decides on the targeted deployment of the airbags and seatbelt pretensioners.

The control unit ensures that all passive safety systems in the Citroën Jumper II function optimally in an emergency. It is responsible for precise activation to protect the occupants.

Why is the Citroën Jumper II airbag control unit defective?

The Citroën Jumper II airbag control unit frequently fails due to internal electronic errors, often caused by intermittent power or grounding problems. These defects cause the airbag warning light to remain permanently active, making communication with the control unit difficult or impossible for Citroën Jumper II airbag control unit repair.

Internal component failures are a common cause of failure. Such errors are usually irreversible by simply erasing the memory.

Problems with the supply voltage or poor ground connections can also damage the control unit. These external factors affect the functionality of this sensitive system.

After an accident, the control unit also stores irreversible crash data, preventing it from functioning properly without professional repair. This requires a specialized Citroën Jumper II airbag control unit repair.

Common error codes for Citroën Jumper II airbag control unit repair

When diagnosing the Citroën Jumper II airbag control unit repair, specific error codes may occur that indicate internal defects or power supply issues. Reading these codes is essential to identify the exact failure and initiate the necessary repair steps to restore safety.

• B0100: Internal electronic error → Signals a serious defect in the airbag control unit → Requires a professional Citroën Jumper II airbag control unit repair.
• B0100-49: ECU internal error / Internal electronic failure → Specifies the internal control unit error → Often associated with power supply and ground problems.
• B0101: Supply voltage below threshold → Indicates that the voltage at the airbag control unit is too low → Can be caused by battery problems or wiring errors.
• B0102: Malfunction in the airbag control unit / Sporadic ground connection fault → Indicates general functional problems or loose ground on the housing → Leads to sporadically or permanently active warning light.
• Crash data stored: Control unit triggered after an accident → Stores indelible data → Requires special deletion or replacement of the control unit for a successful Citroën Jumper II airbag control unit repair.

What part numbers are available for Citroën Jumper II airbag control unit repair?

For a correct Citroën Jumper II airbag control unit repair, exact OEM part numbers are essential, as they ensure compatibility with your vehicle. Numerous numbers from manufacturers such as Fiat, Citroën, and Bosch are confirmed for the 250 model to ensure the correct replacement part is used for the repair.

These numbers identify the specific airbag control unit for the Citroën Jumper II (Type 250). These are exclusively original manufacturer or OEM numbers.

Exact part number matching is crucial for functionality and safety. An incorrect part number may impair airbag function or cause other failures.

• 01388160080 (Fiat/Citroën)
• 1370978080 (Fiat)
• 1608428080 (Fiat, alternative original number)
• 1366119080 (Fiat, compatible alternative)
• 1321119080 (Bosch, suitable for Jumper/Ducato)
• 5840010OE (OEM Fiat)
• 1608005680 (Citroën)
• 00046858203 (OEM)
• 1388160080 (OEM reference number)