B1479 – OBD-II DTC

OBD-II DTC B1479 – Wiper Washer Fluid Level Sensor Circuit Failure

DTC B1479 meaning

DTC B1479 refers to a diagnostic trouble code indicating a failure in the Wiper Washer Fluid Level Sensor Circuit. This code is triggered when the vehicle’s onboard diagnostic system detects an issue with the sensor that monitors the level of washer fluid in the reservoir. The sensor is crucial for alerting the driver when the fluid is low, ensuring optimal visibility during adverse weather conditions.

DTC B1479 symptoms

Common symptoms associated with DTC B1479 may include:

• Warning light on the dashboard indicating low washer fluid.
• Inaccurate readings of washer fluid level.
• Washer fluid system not functioning properly.
• Possible intermittent alerts or messages regarding washer fluid level.

DTC B1479 causes

Several factors can lead to the triggering of DTC B1479, including:

• Faulty washer fluid level sensor.
• Wiring issues, such as shorts or open circuits in the sensor circuit.
• Corrosion or poor connections at the sensor or connector.
• Low washer fluid level in the reservoir.
• Faulty engine control module (ECM) or body control module (BCM).

DTC B1479 seriousness

The seriousness of DTC B1479 can vary. While it may not affect the vehicle’s drivability, it can compromise visibility during inclement weather if the washer fluid is not replenished. Ignoring this code may lead to further electrical issues or damage to the washer system, so it is advisable to address it promptly.

How to diagnose DTC B1479

To diagnose DTC B1479, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the washer fluid reservoir for proper fluid levels.
3. Check the wiring and connectors associated with the washer fluid level sensor for damage or corrosion.
4. Test the washer fluid level sensor with a multimeter to ensure it is functioning correctly.
5. Examine the vehicle’s ECM or BCM for any related fault codes or issues.

How to fix DTC B1479 step-by-step instructions

To fix DTC B1479, follow these steps:

1. Ensure the washer fluid reservoir is filled to the appropriate level.
2. Inspect and repair any damaged wiring or connectors related to the washer fluid level sensor.
3. If the sensor is faulty, replace it with a new one.
4. Clear the DTC using an OBD-II scanner after repairs are made.
5. Test the washer system to ensure it operates correctly and the warning light does not reappear.

How to erase DTC B1479

To erase DTC B1479, 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 ensure the code does not return.

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