AutoCodes – Buick – P0513 Buick

P0513 Buick Code - Immobilizer Key Incorrect

Quick Answer

The immobilizer system functions are provided by the Body Control Module (BCM) and the Engine Control Module (ECM), as well as any control modules, that store and report the environment identifier. Common causes include Immobilizer Key not programmed to the vehicle, Faulty Immobilizer Key, Faulty Body Control Module (BCM). Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0513 Buick indicates Immobilizer Key Incorrect.
Common causes: Common causes include Immobilizer Key not programmed to the vehicle, Faulty Immobilizer Key, Faulty Body Control Module (BCM).
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 10,418

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 30, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0513 Buick Description

The immobilizer system functions are provided by the Body Control Module (BCM) and the Engine Control Module (ECM), as well as any control modules, that store and report the environment identifier.
When an ignition key is inserted into the ignition lock cylinder and the ignition is switched ON, the transponder in the key is energized by the immobilizer coil surrounding the ignition lock cylinder. This immobilizer coil is part of the immobilizer control module. The transponder transmits a signal that contains its unique value, which is received by the BCM through the immobilizer coil. The BCM then compares this value to a value stored in memory. The BCM also monitors various control modules to determine if the stored environment identifiers match.
If both the environment identifier and the value received from the transponder match, the BCM will send the prerelease password via serial data to the ECM. If the encrypted code's unique value is incorrect or the environment identifier does not match, the BCM will send the start to disable message to the ECM which will prevent the vehicle starter and fuel pump from operating.
When the ECM receives the BCM prerelease password, the ECM will challenge the password. The ECM sends this challenge to the BCM via serial data. Both the ECM and BCM perform a calculation on this challenge. If the BCM calculated response to the challenge equals the calculation performed by the ECM, the ECM will allow the vehicle to start.
The Diagnostic Trouble Code (DTC) will be set when the calculated response from the BCM does not equal the calculation performed by the ECM.

OBDII Code P0513 Buick - Immobilizer Key Incorrect - AutoCodes.com — P0513 Buick Code - Immobilizer Key Incorrect

What does this mean?

What are the Possible Causes of the DTC P0513 Buick?

Immobilizer Key not programmed to the vehicle
Faulty Immobilizer Key
Faulty Body Control Module (BCM)

How to Fix the DTC P0513 Buick?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

DTC P0513 may be caused by a loose connection or intermittent poor continuity on the ECM ground or at the negative battery cable. Be sure to check the ECM ground(s) and negative battery cable if the normal system diagnosis does not correct the concern.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0513 Buick code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0513 Buick code?

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Need Help with the Code?

Get the P0513 Buick code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0513 Buick Code

1. What are the common symptoms of OBDII code P0513 in a Buick related to an "Immobilizer Key Incorrect" issue?

- Common symptoms include the engine not starting, the vehicle stalling shortly after starting, and a security light flashing on the dashboard.

2. What are the possible causes of OBDII code P0513 in a Buick indicating an "Immobilizer Key Incorrect" error?

- Possible causes include a faulty key, a damaged transponder in the key, an issue with the immobilizer system, or a problem with the key sensor in the ignition cylinder.

3. How can I diagnose the OBDII code P0513 in my Buick to confirm an "Immobilizer Key Incorrect" issue?

- A diagnostic scan tool can be used to read the code and further investigate the specific cause of the error. Checking the key, transponder, and immobilizer system components can help identify the issue.

4. Is it possible to reset or clear the OBDII code P0513 related to the "Immobilizer Key Incorrect" problem in a Buick?

- In some cases, clearing the code using a diagnostic tool may temporarily resolve the issue, but it is important to address the underlying cause to prevent the error from recurring.

5. Can I fix the OBDII code P0513 "Immobilizer Key Incorrect" issue in a Buick myself, or do I need to take it to a professional mechanic?

- Depending on the root cause, simple solutions like replacing the key battery or reprogramming the key may be possible for DIY enthusiasts. However, complex issues with the immobilizer system may require professional expertise.

6. Are there any preventive measures to avoid encountering the OBDII code P0513 related to an "Immobilizer Key Incorrect" issue in a Buick?

- Regular maintenance of the key fob, ensuring a strong battery connection, and handling the key with care can help prevent issues that lead to the "Immobilizer Key Incorrect" error code.

7. How critical is it to address the OBDII code P0513 in a Buick indicating an "Immobilizer Key Incorrect" issue?

- Ignoring the issue can lead to inconvenience or even the inability to start the vehicle. It is advisable to address this problem promptly to avoid being stranded due to an immobilizer system malfunction.

8. Can a faulty OBDII code reader mistakenly trigger the P0513 code related to an "Immobilizer Key Incorrect" error in a Buick?

- While rare, a malfunctioning or incompatible code reader may sometimes display false codes. It is recommended to use a reliable diagnostic tool and cross-check the results for accuracy.

9. How much does it typically cost to repair the OBDII code P0513 indicating an "Immobilizer Key Incorrect" issue in a Buick?

- The repair costs can vary depending on the underlying cause. Simple fixes like replacing a key battery may be relatively inexpensive, while complex immobilizer system repairs can be more costly.

10. Is it safe to continue driving my Buick with the OBDII code P0513 showing an "Immobilizer Key Incorrect" problem?

- It is not advisable to continue driving the vehicle with this error, as it may lead to unexpected stalling or starting issues. It is best to address the problem promptly to ensure the vehicle's safety and reliability.