P1200 2017 GMC Sierra Code - Fuel Level Sensor 1 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
- P1200 2017 GMC Sierra indicates Fuel Level Sensor 1 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 P1200 2017 GMC Sierra Description
What are the Possible Causes of the DTC P1200 2017 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 P1200 2017 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 P1200 2017 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 P1200 2017 GMC Sierra Code
What does the OBDII code P1200 mean on a 2017 GMC Sierra?
Code P1200 indicates that the Fuel Level Sensor 1 Signal Message Counter is incorrect, meaning the signal from the fuel level sensor is inconsistent or invalid.
What are the common symptoms of code P1200 on a GMC Sierra?
Symptoms may include an inaccurate fuel gauge reading, a check engine light, or erratic fuel level display behavior.
What causes code P1200 to appear on a 2017 GMC Sierra?
Common causes include a faulty fuel level sensor, damaged wiring or connectors, a malfunctioning fuel pump module, or a software issue in the vehicle's control module.
Can a loose connection trigger code P1200?
Yes, a loose or corroded wiring connection to the fuel level sensor can cause this code by disrupting the signal.
How can I diagnose code P1200 on my GMC Sierra?
Start by inspecting the fuel level sensor wiring and connections for damage or corrosion. If no issues are found, use a scan tool to monitor fuel level sensor data for irregularities.
Is it safe to drive with code P1200 active?
While it may not immediately affect drivability, this code can lead to inaccurate fuel gauge readings, which could cause you to run out of fuel unexpectedly.
How do I fix code P1200 on a 2017 GMC Sierra?
Repairs may include replacing the fuel level sensor, repairing damaged wiring, or reprogramming the control module if a software update is necessary.
Can a bad fuel pump cause code P1200?
Yes, since the fuel pump module often integrates the fuel level sensor, a malfunctioning fuel pump assembly could trigger this code.
Will disconnecting the battery clear code P1200?
Disconnecting the battery may temporarily clear the code, but it will likely return if the underlying issue isn't resolved.
Do I need a mechanic to fix code P1200 on my GMC Sierra?
If you're comfortable inspecting wiring and replacing components, you may be able to fix it yourself. Otherwise, a professional mechanic can accurately diagnose and repair the issue.
Discuss the causes and fixes for P1200 2017 GMC Sierra OBDII Code
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