B1206 – OBD-II DTC

OBD-II DTC B1206 – EIC Switch-1 Assembly Circuit Open

DTC B1206 meaning

DTC B1206 refers to a diagnostic trouble code indicating an issue with the EIC (Electronic Instrument Cluster) Switch-1 assembly circuit. Specifically, it signifies that there is an open circuit condition in the switch assembly, which can prevent proper communication between the switch and the vehicle’s control module.

DTC B1206 symptoms

Common symptoms associated with DTC B1206 may include:

• Malfunctioning or non-responsive instrument cluster
• Warning lights illuminated on the dashboard
• Inaccurate readings from gauges
• Loss of certain vehicle functions controlled by the EIC switch

DTC B1206 causes

Several factors can lead to the occurrence of DTC B1206, including:

• Faulty EIC switch assembly
• Damaged wiring or connectors in the circuit
• Corrosion or poor connections at the switch or control module
• Issues with the vehicle’s control module itself

DTC B1206 seriousness

The seriousness of DTC B1206 can vary. While it may not immediately affect the drivability of the vehicle, it can lead to significant issues with the instrument cluster and other electronic functions. Ignoring this code may result in further electrical problems or the inability to monitor critical vehicle information.

How to diagnose DTC B1206

To diagnose DTC B1206, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the DTC.
2. Inspect the EIC switch assembly for visible damage or wear.
3. Check the wiring and connectors for signs of corrosion or disconnection.
4. Test the continuity of the circuit using a multimeter.
5. Examine the vehicle’s control module for any faults or updates.

How to fix DTC B1206 step-by-step instructions

To fix DTC B1206, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. If the EIC switch assembly is faulty, replace it with a new unit.
3. Ensure all connections are secure and free from corrosion.
4. Clear the DTC using an OBD-II scanner.
5. Test the vehicle to ensure the issue is resolved and the DTC does not reappear.

How to erase DTC B1206

To erase DTC B1206, 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. Navigate to the DTC menu on the scanner.
4. Select the option to clear or erase the trouble codes.
5. Disconnect the scanner and start the vehicle to verify that the code does not return.

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