B1BB5 Mitsubishi Code - Passenger Air Bag Disable Switch Circuit Open
Quick Answer
When the ignition is on, the Passenger Airbag MUX Switch Sense circuit supplies a 3 to 10 ms pulse every 100 ms across the On or Off switch resistor to the Passenger Airbag MUX Switch Return circuit. Common causes include Faulty Passenger Air Bag Disable Switch, Passenger Air Bag Disable Switch harness is open or shorted, Passenger Air Bag Disable Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1BB5 Mitsubishi indicates Passenger Air Bag Disable Switch Circuit Open.
- Common causes
- Common causes include Faulty Passenger Air Bag Disable Switch, Passenger Air Bag Disable Switch harness is open or shorted, Passenger Air Bag Disable Switch circuit poor electrical connection.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code B1BB5 Mitsubishi Description
What are the Possible Causes of the DTC B1BB5 Mitsubishi?
- Faulty Passenger Air Bag Disable Switch
- Passenger Air Bag Disable Switch harness is open or shorted
- Passenger Air Bag Disable Switch circuit poor electrical connection
- Faulty Occupant Restraint Controller (ORC)
How to Fix the DTC B1BB5 Mitsubishi?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1BB5 Mitsubishi code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
Need more information about the B1BB5 Mitsubishi code?
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Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B1BB5 Mitsubishi Code
1. What are the common symptoms of OBDII code B1BB5 in a Mitsubishi related to the Passenger Air Bag Disable Switch Circuit Open?
The most common symptoms include the airbag warning light staying illuminated on the dashboard and the passenger airbag being disabled.
2. What typically causes the OBDII code B1BB5 in a Mitsubishi?
The code B1BB5 usually indicates a fault in the passenger air bag disable switch circuit, which can be caused by a disconnected or damaged wiring harness, a faulty switch, or a malfunctioning airbag control module.
3. How can I diagnose the Passenger Air Bag Disable Switch Circuit Open issue in my Mitsubishi?
You can start by visually inspecting the wiring harness and switch for any visible damage. Using a multimeter, you can also test the continuity of the circuit to pinpoint the exact location of the fault.
4. Can I still drive my Mitsubishi with the OBDII code B1BB5 present?
It is not recommended to drive the vehicle with an active airbag fault code, as it may compromise the safety of the passenger in case of an accident. It's best to address the issue promptly.
5. Is it possible to reset the OBDII code B1BB5 in a Mitsubishi without fixing the underlying issue?
Resetting the code without fixing the root cause will only temporarily clear the warning light. The code will likely reappear once the system performs another self-check and detects the same fault.
6. How much does it typically cost to repair the Passenger Air Bag Disable Switch Circuit Open problem in a Mitsubishi?
The cost of repair can vary depending on the exact cause of the issue and whether you choose to fix it yourself or take it to a professional. It may range from a few hundred to a thousand dollars.
7. Are there any safety concerns associated with driving a Mitsubishi with the Passenger Air Bag Disable Switch Circuit Open fault?
Yes, driving with a deactivated passenger airbag can pose a safety risk in the event of a collision, especially if there is a passenger in the front seat. It's crucial to address the issue promptly.
8. Can a DIY enthusiast with basic automotive knowledge fix the B1BB5 code in a Mitsubishi?
If you have basic knowledge of automotive electrical systems and access to the necessary tools, you may be able to diagnose and repair the Passenger Air Bag Disable Switch Circuit Open problem yourself. However, exercise caution when working on airbag systems.
9. Will the OBDII code B1BB5 reset itself after the issue is fixed in a Mitsubishi?
After repairing the underlying cause of the code B1BB5 and ensuring the system passes a self-check, the airbag warning light should reset on its own. If it doesn't, you may need to use an OBDII scanner to clear the code manually.
10. How urgent is it to address the OBDII code B1BB5 in a Mitsubishi?
It is essential to address the B1BB5 code promptly to ensure the proper functioning of the passenger airbag system. Delaying repairs can compromise the safety of occupants in the event of a crash.
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