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Engine-Codes – Generic – P2066

P2066 Code - Fuel Level Sensor 2 Performance

Quick Answer

The P2066 code indicates a problem with the fuel level sensor 2's performance in the vehicle. Common causes include Faulty fuel level sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or debris in the fuel tank. 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 indicates Fuel Level Sensor 2 Performance.
Common causes
Common causes include Faulty fuel level sensor 2, Damaged wiring or connectors in the sensor circuit, Corrosion or debris in the fuel tank.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code P2066 Description

The P2066 code indicates a problem with the fuel level sensor 2's performance in the vehicle. The fuel level sensor is responsible for measuring the amount of fuel in the tank and sending this information to the vehicle's engine control module (ECM). This data is crucial for the ECM to accurately calculate the fuel mixture and ensure optimal engine performance.

OBDII Code P2066 - Fuel Level Sensor 2 Performance
P2066 Code - Fuel Level Sensor 2 Performance

Common Causes of P2066

  1. Faulty fuel level sensor 2
  2. Damaged wiring or connectors in the sensor circuit
  3. Corrosion or debris in the fuel tank
  4. Issues with the ECM

Symptoms of P2066

  1. Inaccurate fuel gauge readings
  2. Check Engine Light illuminated
  3. Engine performance issues
  4. Fuel efficiency may decrease
  5. Engine stalling or misfires

How to Fix P2066

  1. Diagnose the issue by using a scan tool to read the code and test the fuel level sensor 2's functionality.
  2. Inspect the wiring and connectors in the sensor circuit for any damage or corrosion.
  3. Replace the fuel level sensor 2 if it is found to be faulty.
  4. Clear the trouble code from the ECM and test the vehicle to ensure the issue has been resolved.
  5. If the problem persists, further diagnostic testing may be required to identify any other underlying issues.

Cost to Fix P2066

The typical repair costs for addressing a P2066 code can vary depending on the specific cause of the issue and the labor rates at auto repair shops. Generally, replacing a faulty fuel level sensor 2 can cost between $150 to $300, including parts and labor. However, additional diagnostic time and potential repairs may increase the total cost. It's recommended to consult with a local auto repair shop for a more accurate estimate based on your vehicle make and model.

What does this mean?

Tech Notes for P2066

A low fuel level can trigger this code. Before replacing any parts, try filling up the fuel tank and erasing the engine code. If the problem persists, it may be necessary to replace the fuel level sensor.

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Code P2066 Information for Specific Makes

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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