how to resolve B1298 code for my Ford Explorer Fifth Generation (2011-2019)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a flat surface and the engine is off.
• Disconnect the negative battery terminal to prevent any electrical shorts.

2. Inspect and Clean Battery Terminals

• Tools Required: Wire brush or terminal cleaner, protective gloves.
• Remove the positive and negative battery cables.
• Clean the terminals and the battery posts with a wire brush to remove any corrosion.
• Reconnect the battery cables, ensuring they are tight and secure.

3. Test and Replace Battery if Necessary

• Tools Required: Multimeter.
• Reconnect the battery and measure the voltage with the multimeter.
  • If the voltage is below 12.4 volts, the battery may be weak and should be replaced.
• If needed, remove the battery using a socket set to unbolt it from the tray.
• Replace it with a new battery that meets OEM specifications (typically a group size 65 for the Explorer).

4. Check and Replace the Alternator if Needed

• Tools Required: Socket set, multimeter, possibly a belt tensioner tool.
• With the engine running, measure the voltage at the battery; it should be between 13.5 to 14.5 volts.
• If the voltage is below this range, inspect the alternator belt for proper tension and wear. Replace if necessary.
• If the belt is fine, consider replacing the alternator. Disconnect the battery, then remove the alternator from the engine bay using the socket set.

5. Reconnect and Finalize

• Reconnect the battery terminal, ensuring the connection is secure.
• Clear any fault codes using the OBD-II scanner.
• Test drive the vehicle to ensure the code does not reappear.