how to troubleshoot B1B00 code in Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Tools Required: OBD-II scanner, multimeter, basic socket set, torque wrench.
• Disconnect the negative battery terminal to prevent electrical shorts during repair.

2. Inspect and Repair Wiring

• Sub-steps:
  1. Remove the under-dash panel to access the BCM.
  2. Inspect the wiring harness connected to the BCM for any signs of wear, fraying, or damage.
  3. Repair any damaged wiring with heat-shrink tubing and electrical tape.
  4. Ensure all connectors are securely fastened and free of moisture.

3. Replace BCM (if necessary)

• Sub-steps:
  1. If the BCM is faulty, remove the BCM from its mounting bracket by unscrewing the bolts.
  2. Disconnect all wiring harnesses connected to the BCM.
  3. Install the new BCM by connecting the wiring harnesses and securing it in place with bolts.
  4. Reconnect the negative battery terminal.

4. Reprogram BCM (if replacement was made)

• Sub-steps:
  1. Use a scan tool capable of BCM programming to reprogram the new module according to manufacturer specifications.
  2. Follow the on-screen instructions to complete the programming process.

5. Final Checks

• Reinstall the under-dash panel.
• Ensure all electrical components are functioning correctly.