P1200 2017 GMC Sierra Code - Fuel Level Sensor 1 Signal Message Counter Incorrect
Quick Answer
The P1200 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is an issue with the Fuel Level Sensor 1 Signal Message Counter being incorrect. Common causes include Faulty fuel level sensor, Wiring issues or electrical connection problems, Corrosion or damage to sensor components. 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 level sensor, Wiring issues or electrical connection problems, Corrosion or damage to sensor components.
- 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 2017 GMC Sierra Description
The P1200 diagnostic trouble code (DTC) for a 2017 GMC Sierra indicates that there is an issue with the Fuel Level Sensor 1 Signal Message Counter being incorrect. This sensor is responsible for measuring the amount of fuel in the tank and sending that information to the vehicle's computer system. When the signal message counter is incorrect, it means that the data being transmitted by the sensor is not matching the expected values. This can lead to inaccurate readings of the fuel level on the dashboard, potentially causing the fuel gauge to display incorrect information to the driver.
Common Causes of P1200 2017 GMC Sierra
- Faulty fuel level sensor
- Wiring issues or electrical connection problems
- Corrosion or damage to sensor components
- Issues with the vehicle's computer system
- Fuel contamination affecting sensor performance
Symptoms of P1200 2017 GMC Sierra
- Inaccurate fuel level readings on the dashboard
- Fluctuating fuel gauge
- Check Engine Light illuminated
- Poor fuel efficiency
- Difficulty starting the vehicle
How to Fix P1200 2017 GMC Sierra
- Diagnose the specific cause of the incorrect signal message counter by using a scan tool to read the DTC and inspecting the fuel level sensor and related components.
- Replace the faulty fuel level sensor if it is determined to be the cause of the issue.
- Check and repair any wiring or electrical connections that may be loose, damaged, or corroded.
- Clear the DTC from the vehicle's computer system and reset the fuel level sensor.
- Test drive the vehicle to ensure that the issue has been resolved and that the fuel level readings are accurate.
Cost to Fix P1200 2017 GMC Sierra
The typical repair costs for addressing a P1200 code on a 2017 GMC Sierra can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, replacing a faulty fuel level sensor can cost between $150 and $300 for the part alone. Labor costs can range from $100 to $200, with total repair costs typically falling between $250 and $500. It is important to note that these estimates are rough averages and actual costs may vary based on factors such as location, vehicle make and model, and the rates of the auto repair shop. It is advisable to obtain quotes from local shops for a more accurate estimate.
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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.
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