B1476 – OBD-II DTC

OBD-II DTC B1476 – Wiper High Speed Circuit Motor Failure

DTC B1476 meaning

DTC B1476 refers to a diagnostic trouble code indicating a failure in the wiper high-speed circuit motor. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components to ensure they are functioning correctly. When the system detects an issue with the wiper motor’s high-speed operation, it triggers this specific code to alert the technician of the problem.

DTC B1476 symptoms

Common symptoms associated with DTC B1476 may include:

• Wipers not functioning at high speed
• Wipers operating only at low speed or intermittently
• Wiper motor making unusual noises
• Wipers not responding to control inputs
• Dashboard warning lights illuminated

DTC B1476 causes

Several factors can lead to the triggering of DTC B1476, including:

• Faulty wiper motor
• Damaged wiring or connectors in the wiper circuit
• Defective wiper switch
• Issues with the vehicle’s body control module (BCM)
• Corrosion or poor connections in the electrical system

DTC B1476 seriousness

The seriousness of DTC B1476 can vary based on the symptoms experienced. While it may not pose an immediate safety risk, non-functional wipers can significantly impair visibility during rain or adverse weather conditions, increasing the risk of accidents. Therefore, it is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1476

To diagnose DTC B1476, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiper motor and its connections for any visible damage or corrosion.
3. Test the wiper switch for proper operation.
4. Check the wiring harness for continuity and shorts.
5. Examine the body control module for any faults or issues.
6. Clear the DTC and perform a function test of the wipers to see if the code returns.

How to fix DTC B1476 step-by-step instructions

To fix DTC B1476, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on electrical components.
2. Inspect and repair any damaged wiring or connectors in the wiper circuit.
3. Replace the wiper motor if it is found to be faulty.
4. Test and replace the wiper switch if necessary.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the wipers in all modes to ensure proper operation.

How to erase DTC B1476

To erase DTC B1476, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the ignition without starting the engine.
3. Navigate to the DTC menu on the scanner.
4. Select the option to clear or erase the trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to ensure the code does not return.

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