P1103 GMC Code - Water In Fuel Signal Message Counter Incorrect
Quick Answer
The P1103 GMC diagnostic trouble code refers to the Water In Fuel Signal Message Counter Incorrect. Common causes include Faulty water-in-fuel sensor, Wiring issues or corrosion, ECM malfunction. 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 GMC indicates Water In Fuel Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty water-in-fuel sensor, Wiring issues or corrosion, ECM malfunction.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code P1103 GMC Description
The P1103 GMC diagnostic trouble code refers to the Water In Fuel Signal Message Counter Incorrect. This code is typically seen in diesel vehicles that have a water-in-fuel sensor installed. The water-in-fuel sensor is designed to detect if there is water present in the fuel system, which can be detrimental to the engine's performance and overall health. When the sensor detects water, it sends a signal to the engine control module (ECM) to trigger a warning light on the dashboard. However, if the signal message counter is incorrect, it means that the ECM is not receiving the correct number of signals from the sensor, leading to potential issues with the vehicle's fuel system.
Common Causes of P1103 GMC
- Faulty water-in-fuel sensor
- Wiring issues or corrosion
- ECM malfunction
- Water contamination in the fuel system
- Poor quality fuel
Symptoms of P1103 GMC
- Check engine light illuminated
- Reduced fuel efficiency
- Rough idling or engine misfires
- Engine stalling
- Difficulty starting the vehicle
How to Fix P1103 GMC
- Diagnose the issue by using a scan tool to read the code and determine the exact cause of the problem.
- Inspect the water-in-fuel sensor and its wiring for any damage or corrosion. Replace if necessary.
- Check the ECM for any faults or malfunctions. Repair or replace as needed.
- Drain any water from the fuel system and replace the fuel filter to prevent further contamination.
- Clear the code from the ECM and test drive the vehicle to ensure the issue has been resolved.
Cost to Fix P1103 GMC
The typical repair costs for addressing a P1103 GMC code can vary depending on the specific cause of the issue. In general, replacing a water-in-fuel sensor can cost between $100 and $200, while repairing or replacing the ECM can range from $300 to $800. Additionally, labor costs can add up, typically ranging from $80 to $150 per hour. It is advisable to consult with a professional mechanic to get an accurate estimate based on your vehicle's make and model, as well as the extent of the repairs needed.
Need more information about the P1103 GMC code?
Need more information on how to fix the P1103 GMC code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1103 GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P1103 2014 GMC Sierra — Water In Fuel Signal Message Counter Incorrect
- P1103 2015 GMC Sierra — Water In Fuel Signal Message Counter Incorrect
- P1103 2016 GMC Sierra — Water In Fuel Signal Message Counter Incorrect
- P1103 2017 GMC Sierra — Water In Fuel Signal Message Counter Incorrect
- P1103 2018 GMC Sierra — Water In Fuel Signal Message Counter Incorrect
Frequently Asked Questions about P1103 GMC Code
1. What are the common symptoms of OBDII code P1103 in a GMC vehicle?
The common symptoms of code P1103 include rough idling, low engine power, poor fuel efficiency, and difficulty starting the vehicle.
2. What does the OBDII code P1103 "Water In Fuel Signal Message Counter Incorrect" mean for a GMC vehicle?
Code P1103 indicates that the signal message counter related to water in the fuel system is incorrect, suggesting a potential issue with water contamination in the fuel.
3. What are some possible causes of OBDII code P1103 in a GMC vehicle?
Possible causes of code P1103 include water contamination in the fuel system, a faulty water in fuel sensor, wiring issues, or a malfunctioning engine control module (ECM).
4. How can I diagnose the OBDII code P1103 in my GMC vehicle?
Diagnosing code P1103 involves checking for water in the fuel, inspecting the water in fuel sensor and its wiring, and using a scan tool to monitor the signal message counter values.
5. What are the repair options for resolving OBDII code P1103 in a GMC vehicle?
Repair options for code P1103 may include draining and replacing the contaminated fuel, replacing the water in fuel sensor, repairing any damaged wiring, or reprogramming the ECM if necessary.
6. Can I continue driving my GMC vehicle with OBDII code P1103?
It is not recommended to continue driving your vehicle with code P1103, as water contamination in the fuel system can lead to engine performance issues and potential damage if left unresolved.
7. How serious is OBDII code P1103 in a GMC vehicle?
Code P1103 should be addressed promptly as water contamination in the fuel system can affect engine performance and reliability. Ignoring the issue may lead to more severe problems over time.
8. Can a DIY enthusiast fix OBDII code P1103 in a GMC vehicle?
DIY enthusiasts with automotive repair experience may be able to address code P1103 by following diagnostic procedures and making necessary repairs, such as replacing the water in fuel sensor.
9. How much does it typically cost to repair OBDII code P1103 in a GMC vehicle?
The cost of repairing code P1103 can vary depending on the specific cause of the issue. Costs may include fuel system cleaning, sensor replacement, wiring repairs, or ECM reprogramming, so it's best to consult a professional for an accurate estimate.
10. How can I prevent OBDII code P1103 from occurring in my GMC vehicle in the future?
To prevent code P1103, it's important to use clean fuel from reputable sources, regularly inspect the fuel system for contamination, and address any issues with the water in fuel sensor promptly. Regular maintenance can help avoid this code in the future.
Discuss the causes and fixes for P1103 GMC OBDII Code
Code P1103 GMC comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.