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P1926 Lincoln Code - Fuel Additive Level Circuit Range/Performance

Quick Answer

The P1926 code for Lincoln vehicles indicates a Fuel Additive Level Circuit Range/Performance issue. Common causes include Faulty Fuel Additive Level Sensor: The sensor itself may be faulty and not sending accurate signals to the ECM, Wiring Issues: Wiring harnesses connecting the sensor to the ECM may be damaged, corroded, or disconnected, causing signal issues, ECM Malfunction: The ECM itself may be malfunctioning and not interpreting the sensor's signals correctly. 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
P1926 Lincoln indicates Fuel Additive Level Circuit Range/Performance.
Common causes
Common causes include Faulty Fuel Additive Level Sensor: The sensor itself may be faulty and not sending accurate signals to the ECM, Wiring Issues: Wiring harnesses connecting the sensor to the ECM may be damaged, corroded, or disconnected, causing signal issues, ECM Malfunction: The ECM itself may be malfunctioning and not interpreting the sensor's signals correctly.
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 09, 2024
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Code P1926 Lincoln Description

The P1926 code for Lincoln vehicles indicates a Fuel Additive Level Circuit Range/Performance issue. This code is triggered when the Engine Control Module (ECM) detects that the signal from the fuel additive level sensor is outside the expected range or is not performing as it should. The fuel additive level sensor is responsible for monitoring the level of fuel additives in the tank, such as diesel exhaust fluid (DEF) in modern diesel vehicles.

OBDII Code P1926 Lincoln - Fuel Additive Level Circuit Range/Performance
P1926 Lincoln Code - Fuel Additive Level Circuit Range/Performance

Common Causes of P1926 Lincoln

  1. Faulty Fuel Additive Level Sensor: The sensor itself may be faulty and not sending accurate signals to the ECM.
  2. Wiring Issues: Wiring harnesses connecting the sensor to the ECM may be damaged, corroded, or disconnected, causing signal issues.
  3. ECM Malfunction: The ECM itself may be malfunctioning and not interpreting the sensor's signals correctly.
  4. Low Fuel Additive Level: If the fuel additive tank is low or empty, this can trigger the P1926 code.

Symptoms of P1926 Lincoln

  1. Check Engine Light: The most common symptom associated with the P1926 code is the illumination of the Check Engine Light on the vehicle's dashboard.
  2. Reduced Engine Performance: The vehicle may experience a decrease in engine performance, such as reduced power or acceleration.
  3. Poor Fuel Efficiency: The vehicle may consume more fuel than usual due to inefficient engine operation.
  4. Emissions Issues: The vehicle may fail an emissions test due to increased emissions caused by the malfunctioning fuel additive level sensor.

How to Fix P1926 Lincoln

  1. Diagnostic Scan: Begin by using a diagnostic scanner to retrieve the trouble codes and determine the exact cause of the issue.
  2. Inspect Sensor and Wiring: Check the fuel additive level sensor and its wiring for any damage or corrosion. Replace the sensor if necessary and repair any damaged wiring.
  3. Check Fuel Additive Level: Ensure that the fuel additive tank is filled to the proper level to prevent any false readings from the sensor.
  4. Resetting the ECM: After making any necessary repairs, reset the ECM to clear the trouble codes and see if the issue reoccurs.
  5. Test Drive: Take the vehicle for a test drive to ensure that the issue has been resolved and that the Check Engine Light does not reappear.

Cost to Fix P1926 Lincoln

The typical repair costs for addressing a P1926 code may range from $100 to $300, depending on the specific cause of the issue and the cost of parts and labor in your area. Keep in mind that diagnostic time and labor rates can vary, so it's advisable to check with local auto repair shops for a more accurate estimate based on your vehicle make and model. Additionally, factors such as the location of the repair shop, the vehicle's age, and the engine type can also affect the overall cost of the repair.

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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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