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B1B56 Fiat Code - 1st Row Passenger Seat Belt Sensor Circuit Open

- Code Popularity: 518 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1B56 Fiat?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Passenger Seat Belt Buckle Switch
  • Passenger Seat Belt Buckle Switch harness is open or shorted
  • Passenger Seat Belt Buckle Switch circuit poor electrical connection
  • Faulty Occupant Restraint Controller (ORC)
⚠ Does your Fiat have Safety Recalls? → Check here

How to Fix the DTC B1B56 Fiat?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

Search for B1B56 Fiat Questions and Answers: Search here →

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1B56 Fiat code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

When is the Code Detected?

If the Occupant Restraint Controller (ORC) detects the passenger seat belt buckle switch circuits have been open for 2.5 seconds. The active code will change to stored after the ORC verifies the passenger seat belt buckle switch sense circuit voltage has returned to normal voltage range for five seconds.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

Code B1B56 Fiat Description

When powered, the Occupant Restraint Controller (ORC) sends a test current across the Passenger Seat Belt Buckle Switch circuits every 100 ms to verify the integrity of the switch and wiring. The front seat belt switches cannot be adjusted or repaired and, if ineffective or damaged, the entire front seat belt buckle-half unit must be replaced. The airbag warning lamp will display in the instrument cluster for this fault. With the ignition on and the Occupant Restraint Controller (ORC) configured for a Passenger Seat Belt Buckle Switch. The ORC monitors the switch input current ranges at power up and continuously every 100ms with the ignition in on.

OBDII Code B1B56 Fiat - 1st Row Passenger Seat Belt Sensor Circuit Open - AutoCodes.com
B1B56 Fiat Code - 1st Row Passenger Seat Belt Sensor Circuit Open

Need More Information on the Code?

Need more information on how to fix the B1B56 Fiat code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1B56 Fiat code diagnosed by a professional: Find a repair shop in your area

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.

Code B1B56 Fiat comments

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