B1449 – OBD-II DTC

OBD-II DTC B1449 – Wiper Park Sense Circuit Short To Ground

DTC B1449 meaning

DTC B1449 refers to a diagnostic trouble code indicating a problem with the Wiper Park Sense Circuit. Specifically, it signifies that there is a short to ground in the circuit responsible for detecting the wiper park position. This can affect the proper functioning of the windshield wipers, potentially leading to issues with visibility during inclement weather.

DTC B1449 symptoms

Common symptoms associated with DTC B1449 may include:

• Windshield wipers not functioning correctly
• Wipers failing to park in the correct position
• Intermittent wiper operation
• Wipers operating continuously without stopping
• Dashboard warning lights illuminated

DTC B1449 causes

Several factors can lead to the occurrence of DTC B1449, including:

• Damaged or frayed wiring in the wiper park sense circuit
• Faulty wiper motor or wiper control module
• Corrosion or poor connections in the electrical system
• Short circuits caused by moisture intrusion
• Defective wiper park switch

DTC B1449 seriousness

The seriousness of DTC B1449 can vary, but it is generally considered a moderate issue. While it may not cause immediate safety concerns, malfunctioning wipers can significantly impair visibility during rain or snow, increasing the risk of accidents. It is advisable to address this code promptly to ensure safe driving conditions.

How to diagnose DTC B1449

To diagnose DTC B1449, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the B1449 code.
2. Inspect the wiper motor and associated wiring for visible damage or corrosion.
3. Check the wiper park switch for proper operation.
4. Test the continuity of the wiper park sense circuit using a multimeter.
5. Look for any short circuits or grounding issues in the wiring.
6. Examine the wiper control module for faults.

How to fix DTC B1449 step-by-step instructions

To fix DTC B1449, follow these step-by-step instructions:

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

How to erase DTC B1449

To erase DTC B1449, 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 “Erase Codes” or “Clear DTCs” option on the scanner.
4. Confirm the action to clear the trouble codes.
5. Disconnect the scanner and start the vehicle to check if the code reappears.

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