P1103 2015 GMC Sierra Code - Water In Fuel Signal Message Counter Incorrect
Quick Answer
The P1103 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates that the Water In Fuel Signal Message Counter is Incorrect. Common causes include Faulty water-in-fuel sensor, Corroded or damaged wiring connecting the sensor to the ECM, Water contamination in the fuel system. 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 GMC Sierra indicates Water In Fuel Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty water-in-fuel sensor, Corroded or damaged wiring connecting the sensor to the ECM, Water contamination in the fuel system.
- 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 P1103 2015 GMC Sierra Description
The P1103 diagnostic trouble code (DTC) for a 2015 GMC Sierra indicates that the Water In Fuel Signal Message Counter is Incorrect. This code is typically associated with the vehicle's fuel system, specifically the water-in-fuel sensor. The water-in-fuel sensor is responsible for detecting the presence of water in the fuel system, which can be detrimental to the engine's performance and overall operation.
Common Causes of P1103 2015 GMC Sierra
- Faulty water-in-fuel sensor
- Corroded or damaged wiring connecting the sensor to the ECM
- Water contamination in the fuel system
- ECM software issue
- Poor quality fuel
Symptoms of P1103 2015 GMC Sierra
- Rough idling
- Engine misfires
- Decreased fuel efficiency
- Engine stalling
- Check engine light illuminated
How to Fix P1103 2015 GMC Sierra
- Inspect the water-in-fuel sensor for any signs of damage or corrosion.
- Check the wiring connecting the sensor to the ECM for any breaks or loose connections.
- Drain and replace the fuel in the fuel tank to remove any water contamination.
- Clear the DTC and reset the ECM to see if the code reoccurs.
- If the issue persists, consider replacing the water-in-fuel sensor and retesting the system.
Cost to Fix P1103 2015 GMC Sierra
The typical repair costs for addressing a P1103 DTC on a 2015 GMC Sierra can vary depending on the specific cause of the issue. In general, replacing a water-in-fuel sensor can cost between $100 and $200 for the part alone. Labor costs can range from $100 to $200, depending on the shop's hourly rates and the complexity of the repair. Overall, the total repair cost for this issue could range from $200 to $400. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the extent of the repair needed. It's recommended to consult with a trusted mechanic or auto repair shop for a more accurate cost estimate.
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Frequently Asked Questions about P1103 2015 GMC Sierra Code
1. What does the OBDII code P1103 mean on a 2015 GMC Sierra?
P1103 indicates that the water-in-fuel sensor has detected an issue with its signal or counter, meaning it might be providing incorrect data to the engine control module (ECM).
2. What are common symptoms of code P1103 in a 2015 GMC Sierra?
Symptoms may include the "Water in Fuel" warning light on the dashboard, poor engine performance, rough idling, and in some cases, difficulty starting the engine.
3. What causes the P1103 code on a GMC Sierra?
The most common causes are a faulty water-in-fuel sensor, contaminated fuel, corroded or damaged wiring, or a malfunctioning ECM.
4. Can driving with P1103 damage my 2015 GMC Sierra?
Driving with this code for an extended period can cause engine damage due to water contamination in the fuel system, especially if the issue is not addressed promptly.
5. How do I fix code P1103 in my GMC Sierra?
Start by draining and replacing the contaminated fuel, inspect and clean the water-in-fuel sensor, and check for damaged wiring or connectors. Replace the sensor if necessary.
6. How can I confirm the P1103 code diagnosis?
Use an OBDII scanner to retrieve the code and verify it. Then test the water-in-fuel sensor and wiring for proper functionality using a multimeter.
7. How much does it cost to repair a P1103 code on a GMC Sierra?
The cost can vary, but replacing the water-in-fuel sensor typically costs $100-$300, depending on labor charges and parts pricing.
8. Can bad fuel cause P1103 on a GMC Sierra?
Yes, poor-quality or contaminated fuel with high water content is a common cause of this code.
9. How can I prevent the P1103 code from reoccurring?
Regularly use high-quality fuel from reputable sources, periodically drain the water separator (if equipped), and maintain the fuel system components.
10. Is a water-in-fuel sensor replacement covered under warranty for a 2015 GMC Sierra?
It depends on your vehicle's warranty and coverage terms. Check with your GMC dealership for specific details.
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