B1446 – OBD-II DTC

OBD-II DTC B1446 – Wiper Park Sense Circuit Failure

DTC B1446 meaning

DTC B1446 refers to a diagnostic trouble code indicating a failure in the Wiper Park Sense Circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. The Wiper Park Sense Circuit is responsible for detecting the position of the windshield wipers when they are in the parked position. A malfunction in this circuit can lead to improper wiper operation.

DTC B1446 symptoms

Common symptoms associated with DTC B1446 may include:

• Windshield wipers not parking correctly
• Wipers operating intermittently or erratically
• Inability to activate wipers
• Dashboard warning lights illuminated

DTC B1446 causes

Several factors can lead to the occurrence of DTC B1446, including:

• Faulty wiper motor
• Damaged wiring or connectors in the wiper circuit
• Defective wiper park switch
• Issues with the Body Control Module (BCM)

DTC B1446 seriousness

The seriousness of DTC B1446 can vary based on the symptoms experienced. While it may not pose an immediate safety risk, malfunctioning wipers can impair visibility during rain or adverse weather conditions, increasing the risk of accidents. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1446

To diagnose DTC B1446, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiper motor and associated wiring for visible damage.
3. Check the wiper park switch for proper operation.
4. Test the Body Control Module (BCM) for faults.
5. Clear the DTC and perform a wiper function test to see if the code returns.

How to fix DTC B1446 step-by-step instructions

To fix DTC B1446, 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. Test and replace the wiper park switch if necessary.
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 B1446

To erase DTC B1446, 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 verify that the code does not return.

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