P1200 2016 GMC Sierra Code - Fuel Level Sensor 1 Signal Message Counter Incorrect
Quick Answer
The P1200 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Level Sensor 1 Signal Message Counter being incorrect. Common causes include Faulty fuel level sensor, Wiring or connection issues, Malfunctioning ECM. 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 2016 GMC Sierra indicates Fuel Level Sensor 1 Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty fuel level sensor, Wiring or connection issues, Malfunctioning ECM.
- 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 P1200 2016 GMC Sierra Description
The P1200 diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates a problem with the Fuel Level Sensor 1 Signal Message Counter being incorrect. This code specifically relates to the fuel level sensor in the vehicle, which is responsible for measuring the amount of fuel in the tank and sending this information to the engine control module (ECM). The ECM uses this data to calculate fuel consumption, adjust air-fuel mixture, and display fuel level information on the dashboard.
Common Causes of P1200 2016 GMC Sierra
- Faulty fuel level sensor
- Wiring or connection issues
- Malfunctioning ECM
- Fuel tank problems
- Corrosion or damage to sensor components
Symptoms of P1200 2016 GMC Sierra
- Inaccurate fuel level readings on the dashboard
- Fluctuating fuel gauge
- Engine misfires or stalling
- Check engine light illuminated
- Decreased fuel efficiency
How to Fix P1200 2016 GMC Sierra
- Diagnose the issue using a scan tool to read the DTC and inspect the fuel level sensor and related components.
- Test the fuel level sensor's resistance and voltage to determine if it is functioning correctly.
- Check the wiring and connections for any damage or corrosion, repairing or replacing as needed.
- Reset the ECM and clear the DTC to see if the issue persists.
- Replace the fuel level sensor if it is determined to be faulty, ensuring proper installation and calibration.
Cost to Fix P1200 2016 GMC Sierra
The typical repair costs for addressing a P1200 code on a 2016 GMC Sierra can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.
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