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B1351 – OBD-II DTC

OBD-II DTC B1351 – Ignition Key-In Circuit Short To Battery

DTC B1351 meaning

DTC B1351 refers to a diagnostic trouble code indicating a short circuit in the ignition key-in circuit to battery. This code is typically associated with the vehicle’s ignition system and is triggered when the system detects an unexpected voltage level in the key-in circuit, which is responsible for signaling whether the ignition key is in the ignition switch.

DTC B1351 symptoms

Common symptoms associated with DTC B1351 may include:

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

DTC B1351 causes

Several factors can lead to the triggering of DTC B1351, including:

  • Short circuit in the ignition key-in circuit wiring
  • Faulty ignition switch
  • Corroded or damaged connectors
  • Defective body control module (BCM)

DTC B1351 seriousness

The seriousness of DTC B1351 can vary. While it may not pose an immediate safety risk, it can prevent the vehicle from starting, leading to inconvenience. Additionally, unresolved electrical issues can lead to further complications in the vehicle’s electrical system.

How to diagnose DTC B1351

To diagnose DTC B1351, follow these steps:

  1. Use an OBD-II scanner to confirm the presence of the code.
  2. Inspect the ignition key-in circuit wiring for any visible damage or corrosion.
  3. Check the ignition switch for proper operation.
  4. Test the voltage at the ignition key-in circuit with a multimeter.
  5. Examine the body control module for faults or issues.

How to fix DTC B1351 step-by-step instructions

To fix DTC B1351, follow these steps:

  1. Repair or replace any damaged wiring in the ignition key-in circuit.
  2. Replace the faulty ignition switch if necessary.
  3. Clean or replace corroded connectors to ensure proper electrical contact.
  4. Test and, if needed, replace the body control module.
  5. Clear the DTC using an OBD-II scanner and test drive the vehicle to ensure the issue is resolved.

How to erase DTC B1351

To erase DTC B1351, 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 trouble codes.
  5. Confirm the action and wait for the scanner to complete the process.

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