B1352 – OBD-II DTC

OBD-II DTC B1352 – Ignition Key-In Circuit Failure

DTC B1352 meaning

DTC B1352 refers to an Ignition Key-In Circuit Failure. This diagnostic trouble code indicates that the vehicle’s onboard diagnostic system has detected a malfunction in the circuit that senses whether the ignition key is in the ignition switch. This circuit is crucial for various vehicle functions, including security systems and ignition-related operations.

DTC B1352 symptoms

Common symptoms associated with DTC B1352 may include:

• Inability to start the vehicle
• Dashboard warning lights illuminated
• Malfunctioning security system
• Ignition switch not recognizing the key

DTC B1352 causes

Several factors can lead to the occurrence of DTC B1352, including:

• Faulty ignition switch
• Wiring issues or damaged connectors in the key-in circuit
• Defective key or key fob
• Corrosion or dirt in the ignition switch
• Faulty body control module (BCM)

DTC B1352 seriousness

DTC B1352 can be considered serious as it may prevent the vehicle from starting or functioning properly. If the ignition key-in circuit is faulty, it can lead to issues with the vehicle’s security system, potentially leaving the vehicle vulnerable to theft. It is advisable to address this issue promptly to ensure the vehicle operates safely and reliably.

How to diagnose DTC B1352

To diagnose DTC B1352, follow these steps:

1. Use an OBD-II scanner to confirm the presence of DTC B1352.
2. Inspect the ignition switch for any visible damage or wear.
3. Check the wiring and connectors associated with the key-in circuit for signs of corrosion or damage.
4. Test the ignition switch operation using a multimeter to ensure it is functioning correctly.
5. Examine the body control module (BCM) for any faults or issues.

How to fix DTC B1352 step-by-step instructions

To fix DTC B1352, follow these steps:

1. Repair or replace any damaged wiring or connectors in the key-in circuit.
2. If the ignition switch is faulty, replace it with a new one.
3. Clean any corrosion or dirt from the ignition switch and connectors.
4. Test the new or repaired components to ensure they are functioning correctly.
5. Clear the DTC using an OBD-II scanner and test drive the vehicle to confirm the issue is resolved.

How to erase DTC B1352

To erase DTC B1352, 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. Access the scanner’s menu and select the option to clear or erase trouble codes.
4. Confirm the action and wait for the scanner to complete the process.
5. Disconnect the scanner and start the vehicle to ensure the code does not reappear.

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