B2174 – OBD-II DTC

OBD-II DTC B2174 – Window Driver Rear Remote Up Switch Short to Battery

DTC B2174 meaning

DTC B2174 refers to a diagnostic trouble code indicating a problem with the window driver rear remote up switch. Specifically, it signifies a short circuit to battery voltage in the switch circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components for faults.

DTC B2174 symptoms

Common symptoms associated with DTC B2174 may include:

• Rear window not operating correctly
• Inability to raise or lower the rear window using the remote switch
• Possible activation of the vehicle’s warning lights
• Other window switches may also be affected

DTC B2174 causes

Several factors can lead to the triggering of DTC B2174, including:

• Faulty window switch
• Wiring issues, such as frayed or damaged wires
• Corrosion or poor connections in the switch circuit
• Short circuit in the electrical system
• Faulty body control module (BCM)

DTC B2174 seriousness

The seriousness of DTC B2174 can vary. While it may not pose an immediate safety risk, it can lead to inconvenience due to the malfunctioning window. Additionally, if left unaddressed, it may indicate underlying electrical issues that could affect other systems in the vehicle.

How to diagnose DTC B2174

To diagnose DTC B2174, follow these steps:

• Use an OBD-II scanner to confirm the presence of the code.
• Inspect the window switch for physical damage or wear.
• Check the wiring and connectors for signs of corrosion or damage.
• Test the switch for continuity using a multimeter.
• Examine the body control module for faults or updates.

How to fix DTC B2174 step-by-step instructions

To fix DTC B2174, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety.
2. Remove the rear window switch from the door panel.
3. Inspect the switch for damage and replace it if necessary.
4. Check the wiring harness for any signs of wear or damage.
5. Repair or replace any damaged wires or connectors.
6. Reconnect the switch and ensure all connections are secure.
7. Reconnect the vehicle’s battery.
8. Use the OBD-II scanner to clear the DTC and test the window operation.

How to erase DTC B2174

To erase DTC B2174, follow these steps:

• Connect an OBD-II scanner to the vehicle’s diagnostic port.
• Turn on the ignition without starting the engine.
• Navigate to the trouble codes section on the scanner.
• Select the option to clear or erase the codes.
• Confirm the action and wait for the scanner to complete the process.
• Disconnect the scanner and start the vehicle to ensure the code does not return.

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