B1466 – OBD-II DTC

OBD-II DTC B1466 – Wiper Hi/Low Speed Not Switching

DTC B1466 meaning

DTC B1466 refers to a diagnostic trouble code indicating an issue with the windshield wiper system, specifically related to the wiper’s high and low-speed settings not switching correctly. This code is generated when the vehicle’s onboard diagnostic system detects a malfunction in the wiper control circuit or the wiper motor itself.

DTC B1466 symptoms

Common symptoms associated with DTC B1466 may include:

• Wipers not functioning at high or low speed
• Wipers stuck in one position
• Intermittent wiper function not working
• Wiper motor making unusual noises
• Dashboard warning lights illuminated

DTC B1466 causes

Several factors can lead to the triggering of DTC B1466, including:

• Faulty wiper motor
• Defective wiper switch
• Wiring issues or short circuits in the wiper control circuit
• Corroded or loose electrical connections
• Faulty body control module (BCM)

DTC B1466 seriousness

The seriousness of DTC B1466 can vary. While it may not pose an immediate safety risk, it can lead to reduced visibility during inclement weather if the wipers fail to operate correctly. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1466

To diagnose DTC B1466, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiper motor and switch for visible damage or wear.
3. Check the wiring and connectors for corrosion or loose connections.
4. Test the wiper motor operation by applying direct power to it.
5. Examine the body control module for faults or error codes.

How to fix DTC B1466 step-by-step instructions

To fix DTC B1466, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety.
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. Replace the wiper switch if it is not functioning correctly.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the wiper system to ensure proper operation.

How to erase DTC B1466

To erase DTC B1466, 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 trouble codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and start the vehicle to verify that the code does not reappear.

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