B1476 – Wiper High Speed Circuit Motor Failure

The ODBII code B1476 indicates a failure in the high-speed circuit of the windshield wiper motor, suggesting that the motor is not functioning properly when set to high speed.

The severity of ODBII code B1476 Wiper High Speed Circuit Motor Failure is generally considered moderate.

Common Causes For: B1475 Accessory Delay Relay Contact Short To Battery

• Faulty wiper motor
• Damaged wiring or connectors
• Blown fuse
• Malfunctioning wiper relay
• Corrosion in electrical connections
• Short circuit in the wiper circuit
• Faulty wiper switch
• Grounding issues

Common misdiagnosis for B1476 Wiper High Speed Circuit Motor Failure

• Wiper Motor Failure
• Wiper Relay Issues
• Faulty Wiper Switch
• Wiring Harness Problems
• Grounding Issues
• Body Control Module (BCM) Malfunction
• Fuse Issues

Common Troubleshooting Steps

The OBD-II code B1476 indicates a problem with the wiper high-speed circuit motor, which can be related to the windshield wiper system in your vehicle. Here are some common troubleshooting steps to diagnose and potentially resolve the issue:

• Check the Wiper Motor:
• Inspect the wiper motor for any visible damage or corrosion.
• Test the motor by applying direct power to it to see if it operates in high-speed mode.
• Inspect Wiring and Connectors:
• Examine the wiring harness and connectors leading to the wiper motor for any signs of damage, fraying, or corrosion.
• Ensure that all connections are secure and free of dirt or moisture.
• Test the Wiper Switch:
• The wiper switch may be faulty. Use a multimeter to test the switch for continuity in the high-speed position.
• If the switch is defective, it may need to be replaced.
• Check the Fuse:
• Locate the fuse for the windshield wipers in the fuse box and check if it is blown. Replace it if necessary.
• Inspect the Wiper Relay:
• If your vehicle has a relay for the wiper system, test it to ensure it is functioning properly. You can swap it with a similar relay in the fuse box to see if that resolves the issue.
• Scan for Additional Codes:
• Use an OBD-II scanner to check for any additional trouble codes that may provide more context to the problem.
• Check for Ground Issues:
• Ensure that the wiper motor has a good ground connection. A poor ground can cause intermittent or non-functioning components.
• Look for Water Intrusion:
• Inspect the area around the wiper motor for any signs of water intrusion, which can cause electrical issues.
• Consult Wiring Diagrams:
• Refer to the vehicle’s service manual for wiring diagrams to trace the circuit and identify any potential issues.
• Professional Diagnosis:
• If the problem persists after performing these checks, consider taking the vehicle to a professional mechanic or an automotive electrician for a more thorough diagnosis. By following these steps, you should be able to identify the cause of the B1476 code and take appropriate action to resolve the issue.