B1447 – OBD-II DTC

OBD-II DTC B1447 – Wiper Park Sense Circuit Open

DTC B1447 meaning

DTC B1447 refers to a diagnostic trouble code indicating an issue with the Wiper Park Sense Circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an open circuit in the wiper park sense circuit, which is responsible for determining the position of the windshield wipers when they are turned off. The system relies on this information to ensure that the wipers return to their resting position properly.

DTC B1447 symptoms

Common symptoms associated with DTC B1447 may include:

• Windshield wipers not returning to the park position.
• Wipers operating erratically or not functioning at all.
• Intermittent wiper operation issues.
• Dashboard warning lights related to the wiper system illuminated.

DTC B1447 causes

Several factors can lead to the triggering of DTC B1447, including:

• Faulty wiper motor or wiper control module.
• Damaged or corroded wiring in the wiper park sense circuit.
• Loose or poor electrical connections.
• Defective wiper park switch.
• Issues with the vehicle’s body control module (BCM).

DTC B1447 seriousness

The seriousness of DTC B1447 can vary. While it may not pose an immediate safety risk, it can lead to reduced visibility during inclement weather if the wipers do not function properly. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B1447

To diagnose DTC B1447, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the wiper motor and control module for any visible damage.
3. Check the wiring and connectors in the wiper park sense circuit for corrosion or loose connections.
4. Test the wiper park switch for proper operation.
5. Examine the body control module for any faults or issues.
6. Clear the DTC and perform a test drive to see if the code reappears.

How to fix DTC B1447 step-by-step instructions

To fix DTC B1447, follow these steps:

1. Inspect and repair any damaged wiring or connectors in the wiper park sense circuit.
2. Replace the wiper motor or control module if they are found to be faulty.
3. Test and replace the wiper park switch if it is not functioning correctly.
4. Check and repair any issues with the body control module.
5. After repairs, clear the DTC using an OBD-II scanner.
6. Perform a test drive to ensure the issue is resolved and the DTC does not return.

How to erase DTC B1447

To erase DTC B1447, 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. Access the diagnostic trouble codes menu on the scanner.
4. Select the option to clear or erase the codes.
5. Confirm the action and wait for the scanner to complete the process.
6. Disconnect the scanner and perform a test drive to ensure the code does not reappear.

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