P2066 2016 Chevrolet Silverado Code - Fuel Level Sensor 2 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
- P2066 2016 Chevrolet Silverado indicates Fuel Level Sensor 2 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 P2066 2016 Chevrolet Silverado 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 P2066 2016 Chevrolet Silverado?
- 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 P2066 2016 Chevrolet Silverado?
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 P2066 2016 Chevrolet Silverado 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 P2066 2016 Chevrolet Silverado Code
1. What does the OBDII code P2066 on my 2016 Chevrolet Silverado mean?
The code P2066 indicates a performance issue with Fuel Level Sensor 2 in your vehicle.
2. What are common symptoms of a Fuel Level Sensor 2 performance problem in a 2016 Chevrolet Silverado?
Common symptoms include inaccurate fuel gauge readings, fluctuating fuel level readings, or the fuel gauge not working at all.
3. What are some possible causes of the P2066 code on a 2016 Chevrolet Silverado?
Potential causes of the P2066 code include a faulty fuel level sensor, wiring issues, a defective fuel pump, or a problem with the vehicle's powertrain control module (PCM).
4. How can I diagnose the cause of the P2066 code on my 2016 Chevrolet Silverado?
Diagnostic steps may include checking the wiring and connections related to the fuel level sensor, testing the sensor's resistance, inspecting the fuel pump, and scanning the vehicle's PCM for any related error codes.
5. Can I still drive my 2016 Chevrolet Silverado with the P2066 code present?
It is generally not recommended to drive your vehicle with the P2066 code active, as inaccurate fuel level readings can lead to running out of fuel unexpectedly.
6. How can I repair the Fuel Level Sensor 2 performance issue on my 2016 Chevrolet Silverado?
Repair options may include replacing the faulty fuel level sensor, repairing any damaged wiring, addressing fuel pump issues, or reprogramming the PCM.
7. Is it possible to reset the P2066 code on a 2016 Chevrolet Silverado without fixing the underlying issue?
While you can clear the code temporarily with an OBDII scanner, the issue will likely reappear until the root cause is addressed.
8. How much does it cost to fix the Fuel Level Sensor 2 performance problem on a 2016 Chevrolet Silverado?
The cost of repair can vary depending on the specific cause of the issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.
9. Can a DIY enthusiast replace the fuel level sensor on a 2016 Chevrolet Silverado?
Replacing the fuel level sensor may require some mechanical knowledge and tools, so it is recommended for experienced DIY enthusiasts or professional mechanics.
10. How often does the Fuel Level Sensor 2 performance issue occur in 2016 Chevrolet Silverado vehicles?
While not extremely common, fuel level sensor problems can occur in vehicles over time due to wear and tear, electrical issues, or component failure.
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