B1480 – Wiper Washer Fluid Level Sensor Circuit Open

The ODBII code B1480 indicates that there is an open circuit in the wiper washer fluid level sensor, meaning the sensor is not detecting the fluid level properly due to a break in the circuit.

The severity of ODBII code B1480 is generally considered moderate.

Common Causes For: B1479 Wiper Washer Fluid Level Sensor Circuit Failure

• Faulty wiper washer fluid level sensor
• Open or damaged wiring in the sensor circuit
• Poor electrical connections or corroded terminals
• Blown fuse related to the washer fluid system
• Malfunctioning body control module (BCM)

Common misdiagnosis for B1480 Wiper Washer Fluid Level Sensor Circuit Open

• Faulty wiper washer fluid level sensor
• Damaged wiring or connectors
• Malfunctioning body control module (BCM)
• Low washer fluid level
• Short circuit in the wiring harness
• Incorrectly installed or missing washer fluid reservoir
• Faulty instrument cluster or display issues

Common Troubleshooting Steps

The OBD-II code B1480 indicates a problem with the wiper washer fluid level sensor circuit, specifically that there is an open circuit. Here are some common troubleshooting steps to diagnose and resolve this issue:

• Check the Vehicle’s Manual: Refer to the vehicle’s service manual for specific information about the wiper washer fluid level sensor and its circuit.
• Visual Inspection:
• Inspect the wiring and connectors associated with the washer fluid level sensor for any signs of damage, corrosion, or loose connections.
• Check the washer fluid reservoir for any cracks or leaks that could affect the sensor.
• Test the Washer Fluid Level Sensor:
• Disconnect the sensor from the wiring harness and use a multimeter to check for continuity. If there is no continuity, the sensor may be faulty and needs replacement.
• If the sensor is a float type, ensure that it moves freely and is not stuck.
• Check the Wiring:
• Inspect the wiring harness for any breaks, shorts, or frayed wires. Repair or replace any damaged wiring as necessary.
• Use a multimeter to check for voltage at the connector while the ignition is on. If there is no voltage, trace the wiring back to the power source.
• Test the Circuit:
• With the sensor connected, measure the voltage at the sensor connector while the vehicle is running. If the voltage is outside the expected range, there may be an issue with the circuit.
• Check for ground continuity at the sensor connector. A poor ground connection can cause the circuit to be open.
• Inspect the Washer Fluid Level:
• Ensure that the washer fluid reservoir is filled to the appropriate level. Some systems may trigger a fault if the fluid level is too low.
• Clear the Code:
• After performing repairs, clear the trouble code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Replace the Sensor:
• If all other components check out and the issue persists, consider replacing the washer fluid level sensor.
• Consult a Professional:
• If you are unable to diagnose or fix the issue, it may be best to consult a professional mechanic or technician for further assistance. By following these steps, you should be able to identify and resolve the issue related to the B1480 code.