B2180 – OBD-II DTC

OBD-II DTC B2180 – Front Wiper Select Switch “B” Short to Ground

DTC B2180 meaning

DTC B2180 refers to a diagnostic trouble code indicating a “Front Wiper Select Switch ‘B’ Short to Ground.” This code is generated when the vehicle’s onboard diagnostic system detects a fault in the front wiper select switch circuit, specifically when it senses that the circuit is shorted to ground. The front wiper select switch is responsible for controlling the operation of the windshield wipers, including their speed and intermittent settings.

DTC B2180 symptoms

Common symptoms associated with DTC B2180 may include:

• Windshield wipers not functioning at all
• Wipers operating continuously without stopping
• Inability to change wiper speed or settings
• Wiper motor may be stuck in one position
• Dashboard warning lights may illuminate

DTC B2180 causes

Several factors can lead to the occurrence of DTC B2180, including:

• Faulty front wiper select switch
• Wiring issues, such as damaged or frayed wires
• Corrosion or poor connections in the wiper circuit
• Short circuits in the wiring harness
• Faulty wiper motor

DTC B2180 seriousness

DTC B2180 is considered a moderate to serious issue. While it may not prevent the vehicle from operating, it can significantly impair visibility during rain or adverse weather conditions due to malfunctioning wipers. This can pose a safety risk to the driver and other road users. It is advisable to address this issue promptly to ensure safe driving conditions.

How to diagnose DTC B2180

To diagnose DTC B2180, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B2180.
2. Inspect the front wiper select switch for any visible damage or wear.
3. Check the wiring and connectors associated with the wiper circuit for signs of corrosion or damage.
4. Test the continuity of the wires in the circuit to ensure there are no shorts to ground.
5. Examine the wiper motor for proper operation and any signs of failure.
6. Clear the DTC and perform a function test of the wipers to see if the code returns.

How to fix DTC B2180 step-by-step instructions

To fix DTC B2180, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect and replace the front wiper select switch if it is found to be faulty.
3. Repair or replace any damaged wiring or connectors in the wiper circuit.
4. Clean any corrosion from connectors and ensure all connections are secure.
5. Test the wiper motor and replace it if it is not functioning correctly.
6. Reconnect the battery and clear the DTC using an OBD-II scanner.
7. Perform a function test of the wipers to ensure they operate correctly.

How to erase DTC B2180

To erase DTC B2180, 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 menu on the scanner and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not return.

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