B1355 – OBD-II DTC

OBD-II DTC B1355 – Ignition Run Circuit Failure

DTC B1355 meaning

DTC B1355 refers to an “Ignition Run Circuit Failure.” This diagnostic trouble code indicates that there is a problem with the ignition run circuit, which is essential for the proper operation of various electrical components in the vehicle. The ignition run circuit is responsible for supplying power to the vehicle’s systems when the ignition is in the “run” position.

DTC B1355 symptoms

Common symptoms associated with DTC B1355 may include:

• Inability to start the vehicle
• Intermittent electrical issues
• Warning lights on the dashboard
• Malfunctioning accessories or systems

DTC B1355 causes

Several factors can lead to the occurrence of DTC B1355, including:

• Faulty ignition switch
• Wiring issues, such as shorts or open circuits
• Defective relays or fuses
• Problems with the power distribution center
• Malfunctioning body control module (BCM)

DTC B1355 seriousness

DTC B1355 is considered a serious issue as it can prevent the vehicle from starting or cause electrical malfunctions. Ignoring this code may lead to further complications, including damage to electrical components or systems. It is advisable to address this code promptly to ensure the vehicle operates safely and reliably.

How to diagnose DTC B1355

To diagnose DTC B1355, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the ignition switch for proper operation.
3. Check the wiring and connectors in the ignition run circuit for damage or corrosion.
4. Test the relays and fuses associated with the ignition system.
5. Examine the power distribution center for any faults.
6. Verify the functionality of the body control module (BCM).

How to fix DTC B1355 step-by-step instructions

To fix DTC B1355, follow these step-by-step instructions:

1. Start by addressing any identified wiring issues, such as repairing or replacing damaged wires.
2. If the ignition switch is faulty, replace it with a new one.
3. Replace any defective relays or fuses that were found during diagnosis.
4. Ensure all connections are secure and free of corrosion.
5. Test the body control module (BCM) and replace it if necessary.
6. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved.

How to erase DTC B1355

To erase DTC B1355, 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 “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 check if the code reappears.

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