Engine-CodesChevrolet – P1103 2015 Chevrolet Silverado

P1103 2015 Chevrolet Silverado Code - Water In Fuel Signal Message Counter Incorrect

Quick Answer

The P1103 diagnostic trouble code for a 2015 Chevrolet Silverado indicates that the Water In Fuel Signal Message Counter is Incorrect. Common causes include Faulty water in fuel sensor, Water contamination in the fuel system, Wiring or connection issues in the sensor circuit. 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 2015 Chevrolet Silverado indicates Water In Fuel Signal Message Counter Incorrect.
Common causes
Common causes include Faulty water in fuel sensor, Water contamination in the fuel system, Wiring or connection issues in the sensor circuit.
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 10, 2024
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Code P1103 2015 Chevrolet Silverado Description

The P1103 diagnostic trouble code for a 2015 Chevrolet Silverado indicates that the Water In Fuel Signal Message Counter is Incorrect. This code typically points to an issue with the water in fuel sensor system, which is designed to detect the presence of water in the fuel system. Water in the fuel can lead to serious engine problems, as it can cause corrosion, injector damage, and combustion issues. The water in fuel sensor is crucial for detecting any water contamination in the fuel system to prevent these potential issues.

OBDII Code P1103 2015 Chevrolet Silverado - Water In Fuel Signal Message Counter Incorrect
P1103 2015 Chevrolet Silverado Code - Water In Fuel Signal Message Counter Incorrect

Common Causes of P1103 2015 Chevrolet Silverado

  1. Faulty water in fuel sensor
  2. Water contamination in the fuel system
  3. Wiring or connection issues in the sensor circuit
  4. Corrosion or damage to the sensor
  5. Issues with the engine control module (ECM) communicating with the sensor

Symptoms of P1103 2015 Chevrolet Silverado

  1. Check engine light illuminated on the dashboard
  2. Reduced fuel efficiency
  3. Rough idle or hesitation during acceleration
  4. Engine misfires
  5. Engine stalling

How to Fix P1103 2015 Chevrolet Silverado

  1. Begin by diagnosing the issue using a scan tool to retrieve the trouble codes and pinpoint the exact cause of the problem.
  2. Inspect the water in fuel sensor and its wiring for any damage, corrosion, or loose connections. Replace or repair any damaged components.
  3. Drain and inspect the fuel system for any signs of water contamination. If water is present, it will need to be drained and the fuel system cleaned.
  4. Clear the trouble codes from the ECM and reset the system to see if the issue is resolved.
  5. Test drive the vehicle to ensure that the symptoms have been eliminated and the code does not return.

Cost to Fix P1103 2015 Chevrolet Silverado

The cost of repairing a P1103 code on a 2015 Chevrolet Silverado can vary depending on the exact cause of the issue. In general, the cost of parts for replacing a water in fuel sensor can range from $50 to $200, with labor costs adding an additional $100 to $200. This means that the total repair cost can range from $150 to $400. However, it's important to note that these costs are estimates and actual prices may vary based on factors such as location, labor rates, and the specific components that need to be replaced or repaired. It is advisable to consult with a qualified mechanic or auto repair shop for a more accurate cost 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 2015 Chevrolet Silverado Code

1. What does the OBDII code P1103 mean on a 2015 Chevrolet Silverado?

Code P1103 indicates that the Water In Fuel (WIF) sensor has detected an incorrect or erratic signal, likely related to moisture in the fuel system.

2. What are the common symptoms of P1103 on a 2015 Chevrolet Silverado?

Symptoms may include a "Water in Fuel" warning message, reduced engine performance, rough idling, or difficulty starting the engine.

3. What causes the P1103 code on a 2015 Chevrolet Silverado?

Common causes include water contamination in the fuel, a faulty WIF sensor, damaged wiring or connectors, or a failed fuel filter housing.

4. Can driving with the P1103 code damage my engine?

Yes, driving with water-contaminated fuel can cause serious damage to the fuel injectors, fuel pump, and other engine components.

5. How do I fix the P1103 code on my 2015 Chevrolet Silverado?

Start by draining the water from the fuel separator, inspecting the WIF sensor and wiring for damage, and replacing the fuel filter if necessary.

6. How do I know if the WIF sensor is faulty for code P1103?

If the sensor gives an erratic or constant warning despite draining the fuel system, it may need to be tested or replaced.

7. How often should I check for water in the fuel system to prevent P1103?

It’s recommended to check for water during regular fuel filter maintenance or if driving in areas with poor fuel quality.

8. What tools are needed to diagnose and repair the P1103 code?

You’ll need an OBDII scanner to read the code, a wrench to access the fuel filter, and a multimeter to test the WIF sensor and wiring.

9. Can bad fuel quality cause the P1103 code?

Yes, low-quality or contaminated fuel is a common cause of water in the fuel system, which may trigger the P1103 code.

10. Is it expensive to fix the P1103 code on a 2015 Chevrolet Silverado?

Repair costs vary but can range from a simple fuel filter replacement to more expensive repairs if the WIF sensor or other components are damaged.

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