B1679 – OBD-II DTC

OBD-II DTC B1679 – Alarm Panic Input Circuit Short To Battery

DTC B1679 meaning

DTC B1679 refers to a diagnostic trouble code indicating a fault in the Alarm Panic Input Circuit. Specifically, it signifies that there is a short circuit in the input circuit that connects the alarm panic switch to the vehicle’s battery. This can lead to the alarm system malfunctioning or not responding as intended.

DTC B1679 symptoms

Common symptoms associated with DTC B1679 may include:

• The alarm system may not activate or deactivate properly.
• Unexpected triggering of the alarm system.
• Dashboard warning lights related to the alarm system may illuminate.
• Remote key fob may not function correctly.

DTC B1679 causes

Several factors can lead to the occurrence of DTC B1679, including:

• A short circuit in the wiring of the alarm panic input circuit.
• Faulty alarm panic switch.
• Corroded or damaged connectors in the circuit.
• Issues with the vehicle’s body control module (BCM).

DTC B1679 seriousness

DTC B1679 is considered a moderate issue. 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 code promptly to ensure the alarm system functions correctly.

How to diagnose DTC B1679

To diagnose DTC B1679, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the alarm panic switch for physical damage or wear.
3. Check the wiring and connectors for signs of corrosion or shorts.
4. Test the continuity of the alarm panic input circuit.
5. Examine the body control module for any faults or issues.

How to fix DTC B1679 step-by-step instructions

To fix DTC B1679, follow these steps:

1. Disconnect the vehicle’s battery to ensure safety.
2. Inspect and repair any damaged wiring or connectors in the alarm panic input circuit.
3. Replace the alarm panic switch if it is found to be faulty.
4. Reconnect the battery and clear the DTC using an OBD-II scanner.
5. Test the alarm system to ensure it operates correctly.

How to erase DTC B1679

To erase DTC B1679, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Access the trouble codes menu on the scanner.
3. 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 check if the code reappears.

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