B2473 – OBD-II DTC

OBD-II DTC B2473 – Passenger Door Disarm Switch ckt Short to Ground

DTC B2473 meaning

DTC B2473 refers to a diagnostic trouble code indicating a short to ground in the passenger door disarm switch circuit. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle components and systems for faults. The passenger door disarm switch is responsible for signaling the vehicle’s security system to disarm when the passenger door is opened. A short to ground in this circuit can prevent the system from functioning correctly.

DTC B2473 symptoms

Common symptoms associated with DTC B2473 may include:

• Inability to disarm the vehicle’s security system when the passenger door is opened.
• Illumination of the security warning light on the dashboard.
• Possible issues with the central locking system.
• Inconsistent operation of the passenger door lock or unlock functions.

DTC B2473 causes

Several factors can lead to the occurrence of DTC B2473, including:

• A damaged or frayed wire in the passenger door disarm switch circuit.
• Corrosion or poor connections at the switch or related connectors.
• Faulty passenger door disarm switch.
• Issues with the vehicle’s body control module (BCM) that processes the switch signals.

DTC B2473 seriousness

The seriousness of DTC B2473 can vary based on the vehicle’s security features. While it may not affect the vehicle’s drivability, it can compromise the security system, leaving the vehicle vulnerable to theft. It is advisable to address this issue promptly to ensure the vehicle’s security system functions as intended.

How to diagnose DTC B2473

To diagnose DTC B2473, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B2473.
2. Inspect the wiring and connectors associated with the passenger door disarm switch for damage or corrosion.
3. Test the passenger door disarm switch for proper operation using a multimeter.
4. Check the body control module (BCM) for any related fault codes or issues.
5. Perform continuity tests on the circuit to identify any shorts to ground.

How to fix DTC B2473 step-by-step instructions

To fix DTC B2473, follow these step-by-step instructions:

1. Disconnect the vehicle’s battery to ensure safety while working on the electrical system.
2. Inspect the wiring and connectors for the passenger door disarm switch, repairing or replacing any damaged components.
3. Test the passenger door disarm switch and replace it if it is found to be faulty.
4. Check the body control module (BCM) for any updates or reprogramming needs.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test the system to ensure the passenger door disarm switch is functioning correctly.

How to erase DTC B2473

To erase DTC B2473, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn on the vehicle’s 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 reappear.

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