AutoCodes – Buick – P15E2 Buick

P15E2 Buick Code - Alternative Fuel System Request Signal Message Counter Incorrect

Quick Answer

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection. 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: P15E2 Buick indicates Alternative Fuel System Request Signal Message Counter Incorrect.
Common causes: Common causes include Faulty Engine Control Module (ECM), Engine Control Module harness is open or shorted, Engine Control Module circuit poor electrical connection.
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 394

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 Sep 28, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P15E2 Buick Description

Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Operating information and commands are exchanged among the control modules. Each module on the serial data circuit maintains a transmit error counter and a receive error counter. The counter values increase with detected errors and decrease with error-free messages. The Diagnostic Trouble Code (DTC) will be set when the Alternative Fuel System Request Signal Message Counter is Incorrect.

OBDII Code P15E2 Buick - Alternative Fuel System Request Signal Message Counter Incorrect - AutoCodes.com — P15E2 Buick Code - Alternative Fuel System Request Signal Message Counter Incorrect

What does this mean?

What are the Possible Causes of the DTC P15E2 Buick?

Faulty Engine Control Module (ECM)
Engine Control Module harness is open or shorted
Engine Control Module circuit poor electrical connection

How to Fix the DTC P15E2 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P15E2 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 P15E2 Buick code?

Need more information on how to fix the P15E2 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 P15E2 Buick Code

1. What are the common symptoms of OBDII code P15E2 in a Buick related to the Alternative Fuel System Request Signal Message Counter Incorrect?

- Common symptoms include poor engine performance, reduced fuel efficiency, and the illumination of the check engine light.

2. What are the possible causes of OBDII code P15E2 in a Buick?

- Possible causes include a faulty fuel system sensor, wiring issues, software glitches, or a problem with the fuel delivery system.

3. How can I diagnose the OBDII code P15E2 in my Buick?

- You can diagnose this code by using an OBDII scanner to retrieve the specific trouble code, inspecting the fuel system components, and checking for any visible wiring issues.

4. What should I do if my Buick shows the OBDII code P15E2 related to the Alternative Fuel System Request Signal Message Counter Incorrect?

- It is recommended to have the vehicle inspected by a qualified mechanic to accurately diagnose the issue and determine the necessary repairs.

5. Can I still drive my Buick with the OBDII code P15E2 active?

- It is not advisable to drive the vehicle with this code active, as it can lead to further damage and potential safety hazards. It is best to address the issue promptly.

6. How much does it typically cost to repair OBDII code P15E2 in a Buick?

- The cost of repairs can vary depending on the specific cause of the issue, but it is recommended to budget for diagnostic fees, parts replacement, and labor costs.

7. Are there any DIY repair tips for fixing OBDII code P15E2 in a Buick?

- DIY repairs for this code may include checking and cleaning electrical connectors, inspecting for visible damage in the wiring, and ensuring the fuel system components are functioning properly.

8. Will resetting the check engine light resolve OBDII code P15E2 in my Buick?

- Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the code. It is essential to address the root cause of the problem.

9. How long does it take to repair OBDII code P15E2 in a Buick?

- The repair time can vary based on the complexity of the issue and the availability of parts. It is best to consult with a mechanic for a more accurate estimate.

10. Is the OBDII code P15E2 in a Buick a serious problem?

- While it may not cause immediate harm to the vehicle, ignoring this code can lead to decreased performance and potential long-term damage. It is recommended to address it promptly.