B1495 airbag control unit fault

What does error code B1495 mean in the airbag control unit?

Error code B1495 indicates a specific fault in the airbag system, namely a “Trunk Lid Punch-Out Sensor Circuit Failure.” This means that the airbag control unit has detected an open circuit, a short circuit, or a general malfunction in the trunk lid activation sensor’s circuit. As a result, the system can no longer accurately monitor the sensor’s status.

Technically speaking, the punch-out sensor is a component located at the rear of the vehicle that activates upon a collision or a specific force applied to the trunk lid. It forms part of the occupant safety system (SRS) and is responsible for detecting rear-end collisions.

A circuit failure prevents the control unit from receiving reliable signals from this sensor. Consequently, the airbag control unit switches to a safe mode and illuminates the airbag warning light to alert the driver to the system malfunction.

How do you recognize error B1495?

The main symptom of error B1495 is the continuously illuminated or flashing airbag warning light (SRS light) on the instrument panel. This indicates a fault in the safety system. When reading the fault memory, the specific code B1495 appears as an active or stored error.

The activated SRS warning light is a clear sign that the airbag system is no longer fully functional. In the event of an accident, proper airbag deployment may not be guaranteed, as the control unit cannot receive valid information from the rear section of the vehicle.

In some cases, no other symptoms are noticeable during normal driving. The issue is purely electronic and is signaled exclusively by the warning light and the corresponding entry in the airbag control unit’s fault memory.

What causes B1495?

The most common cause of error code B1495 is a direct defect in the trunk lid punch-out sensor itself. Other reasons include damaged or broken wiring connections to the sensor, often due to mechanical stress in the rear area. Short circuits in the circuitry or corrosion at connector contacts caused by moisture are also typical triggers.

A sensor defect can arise from aging or physical damage. The sensitive electronics or mechanics inside may fail, resulting in incorrect or missing signals sent to the control unit.

The wiring harness around the trunk lid is particularly prone to breaks or damage caused by constant movement during opening and closing. A visual inspection of these cables is often the first step in diagnosis.

Moisture damage is another widespread cause. Water ingress can corrode both the sensor and its associated connectors, leading to implausible electrical readings in the circuit. In rarer cases, an internal defect within the airbag control unit itself may also be responsible.

Which models experience B1495?

Error code B1495 primarily occurs in certain Mitsubishi off-road vehicles. The Pajero and Shogun series are especially frequently affected. At Airbag24, we have successfully diagnosed and repaired this fault in Mitsubishi Pajero V80 models, as well as Mitsubishi Shogun V20 and V80 variants.

The vehicles most commonly repaired at Airbag24 with error code B1495 are:

Mitsubishi Pajero V80 (model years 2007–2012)

Mitsubishi Pajero V80 Facelift (2012–2021)

Mitsubishi Shogun V20

Mitsubishi Shogun V80

The airbag control units installed in these vehicles come from manufacturers such as Bosch, Delphi, TRW, or Continental and are known to be susceptible to this particular error code.

How is error B1495 professionally repaired?

Professional repair begins with precise diagnostics to pinpoint the root cause within the punch-out sensor circuit. If an internal defect is identified, after sending the airbag control unit to Airbag24, the electronics are overhauled at the component level. This includes repairing the circuit board and erasing any crash data.

The repair process at Airbag24 follows a proven procedure. First, an inspection of external components—such as cables and connectors—is recommended to rule out obvious damage.

If the problem lies within the control unit itself, it is disassembled and sent for analysis. Our technicians examine the circuit board for electronic defects causing error B1495 and perform professional repairs accordingly.

If crash data remains stored after an accident, it is completely and expertly erased. Subsequently, the repaired control unit undergoes a comprehensive functional test to ensure full operability.

After repair, the control unit is typically ready for use immediately (plug-and-play). We provide 2 years' statutory liability for defects on every repair performed.