P1100 2016 GMC Sierra Code - Fuel Level Sensor 2 Signal Message Counter Incorrect
Quick Answer
The signal circuit is connected to the Fuel Pump Driver Control Module, and the Fuel Pump Driver Control Module communicates with the Engine Control Module (ECM) via serial data. Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module circuit poor electrical connection. 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
- P1100 2016 GMC Sierra indicates Fuel Level Sensor 2 Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Fuel Pump Driver Control Module, Fuel Pump Driver Control Module harness is open or shorted, Fuel Pump Driver Control Module circuit poor electrical connection.
- 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.
Code P1100 2016 GMC Sierra Description
What are the Possible Causes of the DTC P1100 2016 GMC Sierra?
- Faulty Fuel Pump Driver Control Module
- Fuel Pump Driver Control Module harness is open or shorted
- Fuel Pump Driver Control Module circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P1100 2016 GMC Sierra?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P1100 2016 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P1100 2016 GMC Sierra Code
1. What does the OBDII code P1100 mean for a 2016 GMC Sierra?
P1100 indicates an issue with the Fuel Level Sensor 2 Signal Message Counter, meaning the signal from the secondary fuel level sensor is not being received correctly or is out of specification.
2. What are the symptoms of code P1100 in a 2016 GMC Sierra?
Common symptoms include an inaccurate fuel gauge reading, a check engine light, or erratic fuel level behavior.
3. What causes the P1100 code to appear on a 2016 GMC Sierra?
This code is usually caused by a faulty secondary fuel level sensor, damaged wiring or connectors, or a problem with the fuel pump control module.
4. Can code P1100 affect vehicle performance?
While P1100 typically doesn't affect engine performance, it can lead to inaccurate fuel level readings, which may cause inconvenience or lead to running out of fuel unexpectedly.
5. How do I diagnose the P1100 code on a 2016 GMC Sierra?
Start by inspecting the wiring and connectors for the secondary fuel level sensor. Use a scan tool to check the fuel level sensor data and test the sensor's resistance with a multimeter.
6. Can I drive my 2016 GMC Sierra with a P1100 code?
Yes, you can drive the vehicle, but be cautious as the fuel gauge may not display the correct fuel level, increasing the risk of running out of fuel.
7. How is the P1100 code fixed on a 2016 GMC Sierra?
Common repairs include replacing the faulty fuel level sensor, repairing or replacing damaged wiring or connectors, or reprogramming the fuel pump control module if necessary.
8. How much does it cost to repair a P1100 code on a 2016 GMC Sierra?
Costs can vary, but replacing a fuel level sensor typically ranges from $200 to $400, depending on parts and labor.
9. Can a dead battery cause the P1100 code on a 2016 GMC Sierra?
A weak or dead battery usually does not cause this code directly, but electrical issues may lead to communication errors with the fuel level sensor.
10. Does the fuel tank need to be removed to fix the P1100 code on a 2016 GMC Sierra?
In many cases, yes, the fuel tank must be dropped to access and replace the secondary fuel level sensor.
Discuss the causes and fixes for P1100 2016 GMC Sierra OBDII Code
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