B1354 – OBD-II DTC

OBD-II DTC B1354 – Ignition Key-In Circuit Short To Ground

DTC B1354 meaning

DTC B1354 refers to a diagnostic trouble code indicating a short to ground in the ignition key-in circuit. This circuit is responsible for detecting whether the ignition key is in the ignition switch. When a short to ground occurs, it can lead to issues with the vehicle’s electrical systems, particularly those related to starting and security features.

DTC B1354 symptoms

Common symptoms associated with DTC B1354 may include:

• Inability to start the vehicle
• Dashboard warning lights illuminated
• Malfunctioning security system
• Intermittent electrical issues

DTC B1354 causes

The causes of DTC B1354 can vary, but typical reasons include:

• Faulty ignition switch
• Damaged wiring or connectors in the ignition key-in circuit
• Corrosion or poor connections in the electrical system
• Short circuits due to aftermarket installations or modifications

DTC B1354 seriousness

DTC B1354 is considered a serious issue as it can prevent the vehicle from starting and may affect the functionality of the security system. Ignoring this code can lead to further electrical problems and potential safety concerns.

How to diagnose DTC B1354

To diagnose DTC B1354, 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 key-in circuit for damage or corrosion.
4. Test for continuity and shorts in the circuit using a multimeter.
5. Examine any aftermarket installations that may interfere with the circuit.

How to fix DTC B1354 step-by-step instructions

To fix DTC B1354, follow these steps:

1. Repair or replace any damaged wiring or connectors found during diagnosis.
2. If the ignition switch is faulty, replace it with a new one.
3. Ensure all connections are clean and secure to prevent corrosion.
4. Check for any aftermarket modifications that may be causing the short and rectify them.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved.

How to erase DTC B1354

To erase DTC B1354, follow these steps:

1. Connect an OBD-II scanner to the vehicle’s diagnostic port.
2. Turn the ignition key to the “On” position 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 code.
5. Disconnect the scanner and start the vehicle to verify that the code does not return.

Recommended tools for OBD-II diagnostics

Explore our expert picks: The Best OBD2 Scanners for 2025

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

Some of the links on this page may be affiliate links, which means we may earn a small commission if you make a purchase. This helps us keep our DTC database up to date and provide valuable content for free. We only recommend products that we have tested and believe to be the best in their class.