Engine-CodesChevrolet – P1103 2017 Chevrolet Silverado

P1103 2017 Chevrolet Silverado Code - Water In Fuel Signal Message Counter Incorrect

Quick Answer

The P1103 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado indicates that the Water In Fuel Signal Message Counter is incorrect. Common causes include Faulty WIF Sensor: A malfunctioning Water In Fuel sensor can trigger the P1103 code by providing incorrect signals to the ECM, Wiring Issues: Damaged or corroded wiring connecting the WIF sensor to the ECM can cause communication errors and trigger the code, ECM Malfunction: A problem with the engine control module can disrupt the communication between the sensor and the ECM, leading to the code. 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
P1103 2017 Chevrolet Silverado indicates Water In Fuel Signal Message Counter Incorrect.
Common causes
Common causes include Faulty WIF Sensor: A malfunctioning Water In Fuel sensor can trigger the P1103 code by providing incorrect signals to the ECM, Wiring Issues: Damaged or corroded wiring connecting the WIF sensor to the ECM can cause communication errors and trigger the code, ECM Malfunction: A problem with the engine control module can disrupt the communication between the sensor and the ECM, leading to the code.
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.
Table of contents Created and updated by William Orellana on Sep 12, 2024
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Code P1103 2017 Chevrolet Silverado Description

The P1103 diagnostic trouble code (DTC) on a 2017 Chevrolet Silverado indicates that the Water In Fuel Signal Message Counter is incorrect. This code is typically triggered when the engine control module (ECM) detects a discrepancy in the number of times the Water In Fuel (WIF) sensor has detected water in the fuel system. The WIF sensor is responsible for monitoring the presence of water in the fuel filter, which can cause damage to the fuel system components if not addressed promptly.

OBDII Code P1103 2017 Chevrolet Silverado - Water In Fuel Signal Message Counter Incorrect
P1103 2017 Chevrolet Silverado Code - Water In Fuel Signal Message Counter Incorrect

Common Causes of P1103 2017 Chevrolet Silverado

  1. Faulty WIF Sensor: A malfunctioning Water In Fuel sensor can trigger the P1103 code by providing incorrect signals to the ECM.
  2. Wiring Issues: Damaged or corroded wiring connecting the WIF sensor to the ECM can cause communication errors and trigger the code.
  3. ECM Malfunction: A problem with the engine control module can disrupt the communication between the sensor and the ECM, leading to the code.
  4. Water Contamination: If water is present in the fuel system, it can trigger the WIF sensor and cause the code to appear.

Symptoms of P1103 2017 Chevrolet Silverado

  1. Check Engine Light: The most common symptom associated with the P1103 code is the illumination of the check engine light on the dashboard.
  2. Reduced Engine Performance: The vehicle may experience reduced power and acceleration due to improper fuel delivery.
  3. Rough Idling: The engine may idle roughly or inconsistently, indicating a potential fuel system issue.
  4. Stalling: In severe cases, the engine may stall or have difficulty starting due to water contamination in the fuel system.

How to Fix P1103 2017 Chevrolet Silverado

  1. Diagnose the Issue: Use a diagnostic scanner to retrieve the trouble codes and determine the root cause of the P1103 code.
  2. Inspect the WIF Sensor: Check the Water In Fuel sensor for proper operation and replace it if it is faulty.
  3. Check Wiring: Inspect the wiring harness connecting the WIF sensor to the ECM for any damage or corrosion and repair as needed.
  4. Test the ECM: Verify the functionality of the engine control module and replace it if necessary to address communication issues.
  5. Clear Codes: Clear the DTCs from the ECM memory and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P1103 2017 Chevrolet Silverado

The typical repair costs for addressing the P1103 code on a 2017 Chevrolet Silverado can vary depending on the specific cause of the issue. Replacement of the Water In Fuel sensor can range from $100 to $200, while diagnosing and repairing wiring issues may cost between $150 and $300. If the ECM needs to be replaced, the cost can range from $500 to $1000. Labor rates at auto repair shops can vary between $80 and $150 per hour, so it's advisable to check local rates for a more accurate estimate.

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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 P1103 2017 Chevrolet Silverado Code

1. What does the OBDII code P1103 mean on a 2017 Chevrolet Silverado?

The P1103 code indicates that the Water In Fuel Signal Message Counter is incorrect, which may suggest an issue with the water-in-fuel sensor or its communication with the vehicle's computer.

2. What are the common symptoms of code P1103 on a 2017 Chevrolet Silverado?

Symptoms may include a "Water in Fuel" warning message, poor engine performance, reduced fuel efficiency, or difficulty starting the engine.

3. What causes the P1103 code to appear in a 2017 Chevrolet Silverado?

The most common causes include a faulty water-in-fuel sensor, contaminated fuel, damaged wiring or connectors in the sensor circuit, or a software issue in the engine control module (ECM).

4. Can driving with the P1103 code damage my 2017 Chevrolet Silverado?

Driving with this code may not cause immediate damage, but ignoring water contamination in the fuel can lead to severe engine or fuel system damage.

5. How do I diagnose the P1103 code on my Silverado?

Start by checking for water contamination in the fuel, inspecting the water-in-fuel sensor, and examining the wiring and connectors for damage or corrosion.

6. How can I fix the P1103 code on my 2017 Chevrolet Silverado?

Repairs may involve draining and replacing contaminated fuel, replacing the water-in-fuel sensor, repairing damaged wiring, or updating the ECM software if needed.

7. How do I check for water in my Silverado’s fuel system?

Drain a small amount of diesel fuel from the fuel filter housing into a clear container and look for water separation at the bottom of the fuel.

8. What tools are needed to troubleshoot the P1103 code?

You may need an OBDII scanner, a multimeter to check electrical connections, and basic tools to inspect and possibly replace the water-in-fuel sensor.

9. Does the P1103 code require immediate attention?

Yes, it’s important to address it promptly to prevent long-term damage to the fuel system or engine caused by water contamination.

10. Can a software update fix the P1103 code on a 2017 Silverado?

In some cases, a software update for the ECM may resolve the issue, especially if the problem is related to incorrect signal interpretation rather than a hardware failure.

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