P0461 2017 GMC Sierra Code - Fuel Level Sensor Performance
Quick Answer
Diesel Engine The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor 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
- P0461 2017 GMC Sierra indicates Fuel Level Sensor Performance.
- Common causes
- Common causes include Faulty Fuel Level Sensor, Fuel Level Sensor harness is open or shorted, Fuel Level Sensor 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 P0461 2017 GMC Sierra Description
The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. The Fuel Pump Driver Control Module monitors the signal circuits of the primary fuel level sensor and the secondary fuel level sensor and sends the signal information to the Engine Control Module (ECM) for all further handling. The ECM uses this value in order to determine the fuel level. When the fuel tank is full, the resistances of both fuel level sensors are low, and the ECM senses a low signal voltage on both the signal circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tank is empty, the resistances of the fuel level sensors are high, and the ECM senses a high signal voltage. The ECM uses the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the instrument cluster in order to control the fuel gauge.
Gasoline Engine
The primary fuel level sensor and the secondary fuel level sensor change resistance based on fuel level. The Engine Control Module (ECM) monitors the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to determine the fuel level. When the fuel tank is full, the resistances of both fuel level sensors are low, and the ECM senses a low signal voltage on both the signal circuits of the primary fuel level sensor and the secondary fuel level sensor. When the fuel tank is empty, the resistances of the fuel level sensors are high, and the ECM senses a high signal voltage. The ECM uses the signal circuits of the primary fuel level sensor and the secondary fuel level sensor in order to calculate the percentage of remaining fuel in the tank. The ECM sends the fuel level percentage via the serial data circuit to the instrument cluster in order to control the fuel gauge.
The Diagnostic Trouble Code (DTC) will be set if the ECM detects a change in fuel level of less than a specified amount (typically 3 - 10 L or 0.8 - 2.6 gal) over a specified driving distance (typically 240 - 320 km or 150 - 200 miles).
What are the Possible Causes of the DTC P0461 2017 GMC Sierra?
- Faulty Fuel Level Sensor
- Fuel Level Sensor harness is open or shorted
- Fuel Level Sensor circuit poor electrical connection
- Faulty Instrument Cluster
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0461 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0461 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 P0461 2017 GMC Sierra Code
1. What does OBDII code P0461 mean on a 2017 GMC Sierra?
P0461 indicates a "Fuel Level Sensor Performance" issue, meaning the fuel level sensor is not providing accurate readings to the engine control module (ECM).
2. What are the symptoms of code P0461 in a 2017 GMC Sierra?
Symptoms may include an inaccurate fuel gauge reading, the check engine light turning on, or erratic fuel level fluctuations.
3. What causes code P0461 on a 2017 GMC Sierra?
Common causes include a faulty fuel level sensor, issues with the wiring or connectors, a malfunctioning fuel pump assembly, or a problem with the ECM.
4. How do I diagnose code P0461 on a 2017 GMC Sierra?
Diagnosis involves checking the fuel level sensor, inspecting the wiring and connectors for damage, and using a scan tool to monitor fuel level sensor data.
5. Can I still drive my 2017 GMC Sierra with code P0461?
While the truck may still be drivable, you could experience inaccurate fuel readings, which increases the risk of running out of fuel unexpectedly.
6. How is code P0461 fixed on a 2017 GMC Sierra?
Repairs may include replacing the fuel level sensor, repairing damaged wiring, cleaning corroded connectors, or, in rare cases, reprogramming or replacing the ECM.
7. How much does it cost to fix code P0461 on a 2017 GMC Sierra?
Repair costs can range from $150 to $500 or more, depending on whether the issue is with the fuel level sensor, wiring, or other components.
8. Can a bad fuel pump cause code P0461 on a 2017 GMC Sierra?
Yes, since the fuel level sensor is often part of the fuel pump assembly, a failing fuel pump could lead to sensor issues and trigger this code.
9. Is a faulty fuel level sensor the only cause of P0461 on a 2017 GMC Sierra?
No, other potential causes include wiring issues, corroded connectors, or problems with the ECM.
10. Do I need to clear the code after fixing P0461 on a 2017 GMC Sierra?
Yes, use an OBDII scan tool to clear the code after completing repairs to ensure the issue is resolved and the check engine light turns off.
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