01741-001 airbag control unit fault

What does error code 01741-001 in the airbag control unit indicate?

Error code 01741-001 points to an internal, critical fault in the airbag control unit. This error is primarily triggered by crash data stored after a collision, which causes the control unit to lock down for safety reasons. This lockout disables the entire airbag system and can only be cleared through specialized repair.

Technically, the control unit performs continuous self-diagnosis. Code 01741-001 is set when an internal diagnostic test fails. In most cases, the cause is an irreversible entry in the internal EEPROM memory, written following an impact or activation of restraint systems.

This lockout is a manufacturer‑specified safety measure designed to prevent a potentially damaged control unit from being reused without professional inspection and repair. The module often becomes unresponsive to standard diagnostic tools or refuses to clear the error.

How do you recognize error 01741-001?

The most obvious symptom of error code 01741-001 is a permanently illuminated airbag warning light on the instrument cluster. Additionally, the airbag control unit may no longer be readable by conventional diagnostic equipment because it remains locked.

The airbag indicator (SRS light) does not extinguish as usual after starting the vehicle; instead, it stays lit continuously. This alerts the driver to a serious, safety‑related defect in the restraint system that requires immediate attention.

In the workshop, the issue often manifests as communication with the airbag control unit failing altogether or never establishing connection. If a connection is made, only the internal error 01741-001 appears, which cannot be cleared using standard methods.

What causes 01741-001?

The most common cause of error code 01741-001 is crash data stored in the control unit after a collision. Other potential causes include internal electronic faults—such as microcontroller malfunctions, moisture damage leading to short circuits, or defective peripheral sensors and their wiring.

Stored crash data is the primary culprit. Even if not all airbags deployed, the control unit permanently records this information after a crash. This data lock can only be removed through specialized chip‑level interventions.

Internal hardware defects are another possible source. A faulty microcontroller, damaged traces, or cold solder joints on the circuit board can disrupt the control unit’s self‑diagnosis and trigger this error code. Voltage fluctuations or moisture can also cause lasting damage to sensitive electronics.

Although less frequent, external factors such as defective side‑airbag sensors, cable breaks, or poor connector contacts can lead to internal processing errors that the control unit interprets as a severe internal fault, resulting in error 01741-001.

Which vehicles experience error 01741-001?

Error code 01741-001 is specific to airbag control units in Bentley vehicles. It primarily affects exclusive models like the Bentley Azure, Continental T, and Continental Supersports of certain series equipped with this particular fault diagnosis.

At Airbag24, we repair this error code for the following models and series:

Bentley Azure 1st Generation (2006–2011)

Bentley Continental T 1st Generation (1991–2002)

Bentley Continental Supersports Mk1

How is error code 01741-001 professionally repaired?

Professional repair of error 01741-001 focuses on eliminating the root cause at the electronic level. This includes reading the fault memory, erasing stored crash data directly from the memory chip, and conducting a comprehensive functional check of all relevant components within the control unit.

After removing and sending the control unit to Airbag24, a detailed initial inspection is performed using specialized diagnostic equipment. During this process, the exact condition of the electronics is analyzed to confirm whether crash data is responsible for the lockout.

The core of the repair involves resetting the internal memory. Technicians access the memory chip (e.g., EEPROM) directly to securely erase all crash data. If further defects are detected in components such as ICs, fuses, or circuit traces during analysis, these parts are expertly repaired or replaced.

Finally, a comprehensive functional test is performed on a test bench. Here, the control unit’s behavior is simulated under real-world conditions to ensure it operates flawlessly and that the airbag warning light extinguishes after reinstallation in the vehicle. Airbag24 provides 2 years' statutory liability for defects on every repair.