B1BB5 RAM 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 RAM 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 RAM Description
What are the Possible Causes of the DTC B1BB5 RAM?
- 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 RAM?
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 RAM 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.
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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 RAM Code
What does the OBDII code B1BB5 indicate?
The OBDII code B1BB5 indicates that there is an open circuit in the passenger air bag disable switch, which can prevent the airbag from functioning properly.
What are the common symptoms of the B1BB5 code?
Common symptoms include a warning light on the dashboard, the passenger airbag indicator being illuminated, and potential airbag system malfunction warnings.
What can cause the B1BB5 code to trigger?
The B1BB5 code can be triggered by a faulty airbag disable switch, damaged wiring or connectors, or a malfunction in the airbag control module.
How can I diagnose the B1BB5 code?
To diagnose the B1BB5 code, start by visually inspecting the wiring and connectors related to the passenger airbag disable switch. Use a multimeter to check for continuity in the circuit, and scan for any additional codes that may provide more context.
What repairs are typically needed for a B1BB5 code?
Repairs may involve replacing a faulty passenger airbag disable switch, repairing damaged wiring or connectors, or resetting the airbag control module if necessary.
Can I drive my vehicle with the B1BB5 code active?
It is not recommended to drive with an active B1BB5 code, as it indicates a potential issue with the airbag system, which may compromise passenger safety in the event of an accident.
Is the B1BB5 code specific to certain vehicle makes and models?
The B1BB5 code can occur in various vehicle makes and models that are equipped with an airbag system, but the exact implementation and diagnostic process may vary.
How do I reset the B1BB5 code after repairs?
To reset the B1BB5 code, you can use an OBDII scanner to clear the code after making the necessary repairs. Alternatively, disconnecting the vehicle's battery for a few minutes may also reset the system.
What should I do if the B1BB5 code returns after repairs?
If the B1BB5 code returns after repairs, further diagnosis is needed to identify any underlying issues, such as intermittent wiring problems or a faulty airbag control module.
Discuss the causes and fixes for B1BB5 RAM OBDII Code
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