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P15E2 2017 Chevrolet Silverado Code - Alternative Fuel System Request Signal Message Counter Incorrect

Quick Answer

The P15E2 diagnostic trouble code (DTC) indicates an issue with the Alternative Fuel System Request Signal Message Counter in a 2017 Chevrolet Silverado. Common causes include Faulty alternative fuel system sensors, such as pressure or temperature sensors, Wiring issues, including damaged or corroded connectors in the alternative fuel system, Software glitches or outdated firmware in the ECM. 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 2017 Chevrolet Silverado indicates Alternative Fuel System Request Signal Message Counter Incorrect.
Common causes
Common causes include Faulty alternative fuel system sensors, such as pressure or temperature sensors, Wiring issues, including damaged or corroded connectors in the alternative fuel system, Software glitches or outdated firmware in the ECM.
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.
What is this?
Table of contents Created and updated by William Orellana on Oct 18, 2024
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Code P15E2 2017 Chevrolet Silverado Description

The P15E2 diagnostic trouble code (DTC) indicates an issue with the Alternative Fuel System Request Signal Message Counter in a 2017 Chevrolet Silverado. This code typically arises when the vehicle's Engine Control Module (ECM) detects an inconsistency in the communication between the alternative fuel system components, such as the fuel control module and the ECM. The alternative fuel system may refer to systems utilizing compressed natural gas (CNG) or propane, which are designed to operate alongside or instead of traditional gasoline engines.

OBDII Code P15E2 2017 Chevrolet Silverado - Alternative Fuel System Request Signal Message Counter Incorrect
P15E2 2017 Chevrolet Silverado Code - Alternative Fuel System Request Signal Message Counter Incorrect

Common Causes of P15E2 2017 Chevrolet Silverado

  1. Faulty alternative fuel system sensors, such as pressure or temperature sensors.
  2. Wiring issues, including damaged or corroded connectors in the alternative fuel system.
  3. Software glitches or outdated firmware in the ECM.
  4. Malfunctioning fuel control module that fails to communicate properly with the ECM.
  5. Issues with the alternative fuel supply, such as low pressure or contamination.

Symptoms of P15E2 2017 Chevrolet Silverado

  1. Reduced engine power or acceleration.
  2. Poor fuel economy or increased fuel consumption.
  3. Difficulty starting the engine, particularly when switching to alternative fuel.
  4. Illuminated check engine light on the dashboard.
  5. Erratic engine performance, including stalling or misfiring.

How to Fix P15E2 2017 Chevrolet Silverado

  1. Diagnostic Scan: Begin with a comprehensive diagnostic scan to confirm the P15E2 code and check for any additional codes that may provide further insight into the problem.
  2. Visual Inspection: Perform a thorough visual inspection of the wiring and connectors associated with the alternative fuel system. Look for signs of damage, corrosion, or loose connections.
  3. Sensor Testing: Test the functionality of the alternative fuel system sensors using a multimeter or diagnostic tool. Replace any faulty sensors as necessary.
  4. ECM Update: If software issues are suspected, check for available updates for the ECM and apply them to ensure proper communication between the components.
  5. Fuel System Check: Inspect the alternative fuel supply system for any issues, such as low pressure or contamination, and address these problems accordingly.

Cost to Fix P15E2 2017 Chevrolet Silverado

The typical repair costs for addressing the P15E2 code can vary widely based on the specific diagnosis and repairs needed. On average, you might expect to pay between $200 and $800, which includes parts and labor. Labor rates at auto repair shops generally range from $80 to $150 per hour. Factors such as location, the specific make and model of the vehicle, and the engine type can significantly influence the final cost. In metropolitan areas or at dealerships, rates may be higher, while independent shops often offer more competitive pricing. It is advisable to check local rates for a more precise estimate and to obtain multiple quotes to ensure fair pricing.

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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 2017 Chevrolet Silverado Code

1. What does OBDII code P15E2 mean on a 2017 Chevrolet Silverado?

P15E2 indicates that the Alternative Fuel System Request Signal Message Counter is incorrect, typically due to a communication issue between the alternative fuel system and the engine control module (ECM).

2. What are the common symptoms of code P15E2 in a 2017 Chevrolet Silverado?

Symptoms may include an illuminated check engine light, reduced engine performance, alternative fuel system malfunctions, or difficulty switching between fuel types.

3. What causes the P15E2 code to appear in a Chevrolet Silverado?

The code can be caused by a faulty alternative fuel control module, wiring or connection issues, a software glitch in the ECM, or a sensor miscommunication related to the alternative fuel system.

4. Can the P15E2 code cause drivability issues in my Silverado?

Yes, it can lead to reduced performance or efficiency, particularly if the alternative fuel system is not functioning as intended.

5. How do I diagnose the P15E2 code on my 2017 Chevrolet Silverado?

Diagnosis involves scanning for codes, inspecting wiring and connectors between the ECM and alternative fuel system, and testing the functionality of the alternative fuel control module.

6. Can a software update fix the P15E2 code in my Silverado?

In some cases, reprogramming or updating the ECM software may resolve the issue if it’s caused by a glitch or miscommunication.

7. Is it safe to drive with the P15E2 code active?

While the vehicle may still be drivable, ignoring the code could lead to reduced efficiency or further damage to the alternative fuel system.

8. How much does it cost to repair the P15E2 code on a Chevrolet Silverado?

Repair costs vary, but they may range from $100 for wiring repairs to over $500 if the alternative fuel control module needs replacement.

9. Can a bad sensor trigger the P15E2 code on a 2017 Silverado?

Yes, a faulty sensor in the alternative fuel system can cause incorrect signals and trigger this code.

10. Do I need specialized equipment to fix the P15E2 code on my Silverado?

Yes, a professional-grade OBDII scanner and diagnostic tools are often needed to accurately identify and repair the issue.

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