B1358 – OBD-II DTC

OBD-II DTC B1358 – Ignition Run Circuit Short To Ground

DTC B1358 meaning

DTC B1358 refers to a diagnostic trouble code indicating an issue with the ignition run circuit, specifically a short to ground condition. This code is part of the On-Board Diagnostics II (OBD-II) system, which monitors various vehicle systems for faults. A short to ground means that the circuit is unintentionally connected to the vehicle’s chassis, causing an abnormal electrical path that can disrupt normal operation.

DTC B1358 symptoms

When DTC B1358 is triggered, the following symptoms may be observed:

• Engine may not start or may stall unexpectedly.
• Dashboard warning lights may illuminate, particularly the check engine light.
• Electrical components may malfunction or operate erratically.
• Inconsistent power delivery to the ignition system.

DTC B1358 causes

Several factors can lead to the occurrence of DTC B1358, including:

• Damaged wiring or connectors in the ignition run circuit.
• Faulty ignition switch.
• Corrosion or poor connections in the electrical system.
• Short circuits caused by aftermarket modifications or repairs.
• Defective components within the ignition system.

DTC B1358 seriousness

DTC B1358 is considered a serious issue as it can prevent the engine from starting or cause it to stall while driving. This can lead to dangerous situations on the road. Additionally, the underlying electrical issues may affect other systems in the vehicle, potentially leading to further complications if not addressed promptly.

How to diagnose DTC B1358

To diagnose DTC B1358, follow these steps:

1. Use an OBD-II scanner to confirm the presence of the code.
2. Inspect the ignition run circuit wiring and connectors for damage or corrosion.
3. Check the ignition switch for proper operation.
4. Test for continuity in the circuit to identify any shorts to ground.
5. Examine related components for faults that may contribute to the issue.

How to fix DTC B1358 step-by-step instructions

To fix DTC B1358, follow these step-by-step instructions:

1. Disconnect the battery to ensure safety while working on the electrical system.
2. Inspect and repair any damaged wiring or connectors in the ignition run circuit.
3. Replace the ignition switch if it is found to be faulty.
4. Clean any corroded connections to ensure good electrical contact.
5. Reconnect the battery and clear the DTC using an OBD-II scanner.
6. Test drive the vehicle to ensure the issue is resolved and the code does not reappear.

How to erase DTC B1358

To erase DTC B1358, 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 codes from the vehicle’s computer.
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.