P0513 Incorrect Immobilizer Key

Definition: The OBD-II code P0513 indicates that there is an issue with the immobilizer key, which means the vehicle’s anti-theft system has detected a problem with the key used to start the engine. This could be due to a faulty key, an issue with the immobilizer system itself, or a communication error between the key and the vehicle’s computer.

p0513 – Incorrect Immobilizer Key

Typical Severity: Moderate

Common Causes

p0513 – Incorrect Immobilizer Key

Common Causes:

• Incorrect key being used to start the vehicle
• Defective immobilizer system components
• Issues with the key transponder or receiver
• Faulty wiring in the immobilizer system
• Programming error in the key or immobilizer system

 

Common Misdiagnosis

OBD2 Code: P0513

Description: Incorrect Immobilizer Key

Common Misdiagnosis:

• Faulty key fob battery is often misdiagnosed as an immobilizer issue.
• The ignition switch or lock cylinder may be incorrectly blamed instead of the actual key problem.
• A malfunctioning Engine Control Module (ECM) can be mistaken for a key-related issue.

 

Common Diagnostic Steps

OBD2 Code: P0513

Description: Incorrect Immobilizer Key

Common Diagnostic Steps:

• Verify the vehicle’s battery voltage is within the normal range.
• Check for any additional trouble codes that may be related to the immobilizer system.
• Inspect the key and ignition switch for physical damage or wear.
• Ensure that the correct key is being used for the vehicle.
• Test the transponder in the key using a diagnostic tool to ensure it is functioning properly.
• Examine wiring and connectors between the immobilizer control module and other components for signs of damage or corrosion.
• If applicable, reprogram or replace keys as needed following manufacturer guidelines.
• If necessary, test and possibly replace the immobilizer control module after verifying all other components are functioning correctly.