how to fix B1A00 code in Ram 1500 DT (2019-Present)

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the battery to ensure safety while working on the electrical system.

Tools Required:

• OBD-II scanner
• Multimeter
• Socket set
• Torque wrench
• Wire connectors and electrical tape

2. Inspect and Repair Wiring

• Step 1: Visually inspect all wiring connected to the BCM for fraying or damage.
• Step 2: If damaged, repair or replace the wiring using appropriate wire connectors and electrical tape.
• Step 3: Ensure that all connections are secure and free of corrosion.

3. Check and Replace BCM

• Step 1: If wiring is intact, locate the BCM (typically found under the dashboard).
• Step 2: Disconnect the BCM harnesses.
• Step 3: Remove the BCM from its mounting location, noting any screws or clips used.
• Step 4: Install the new BCM (if replacement is necessary) by securing it with the original hardware.
• Step 5: Reconnect all harnesses securely.

4. Reconnect Battery and Clear Codes

• Step 1: Reconnect the battery terminals, ensuring they are tight.
• Step 2: Use the OBD-II scanner to clear the B1A00 code and any other present codes.
• Step 3: Start the vehicle and check if the check engine light remains off.