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P1922 Mercury Code - Fuel Additive Level Circuit Malfunction

Quick Answer

The P1922 diagnostic trouble code (DTC) for Mercury vehicles indicates a Fuel Additive Level Circuit Malfunction. Common causes include Faulty Fuel Additive Level Sensor: The sensor that monitors the level of the fuel additive in the tank may be faulty, causing the P1922 code to be triggered, Wiring Issues: Problems with the wiring connecting the fuel additive level sensor to the vehicle's computer can also lead to this code, Fuel Additive Tank Problem: A malfunction in the fuel additive tank itself, such as a leak or blockage, can trigger the P1922 code. 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
P1922 Mercury indicates Fuel Additive Level Circuit Malfunction.
Common causes
Common causes include Faulty Fuel Additive Level Sensor: The sensor that monitors the level of the fuel additive in the tank may be faulty, causing the P1922 code to be triggered, Wiring Issues: Problems with the wiring connecting the fuel additive level sensor to the vehicle's computer can also lead to this code, Fuel Additive Tank Problem: A malfunction in the fuel additive tank itself, such as a leak or blockage, can trigger the P1922 code.
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 18, 2024
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Code P1922 Mercury Description

The P1922 diagnostic trouble code (DTC) for Mercury vehicles indicates a Fuel Additive Level Circuit Malfunction. This code is specifically related to the fuel additive system in the vehicle. Modern vehicles are equipped with systems that help reduce emissions and improve fuel efficiency. One of these systems is the fuel additive system, which includes a tank for storing a fuel additive that is mixed with the fuel to improve combustion and reduce harmful emissions.

OBDII Code P1922 Mercury - Fuel Additive Level Circuit Malfunction
P1922 Mercury Code - Fuel Additive Level Circuit Malfunction

Common Causes of P1922 Mercury

  1. Faulty Fuel Additive Level Sensor: The sensor that monitors the level of the fuel additive in the tank may be faulty, causing the P1922 code to be triggered.
  2. Wiring Issues: Problems with the wiring connecting the fuel additive level sensor to the vehicle's computer can also lead to this code.
  3. Fuel Additive Tank Problem: A malfunction in the fuel additive tank itself, such as a leak or blockage, can trigger the P1922 code.
  4. Software Glitch: In some cases, a software glitch in the vehicle's onboard computer can mistakenly trigger the P1922 code.

Symptoms of P1922 Mercury

  1. Check Engine Light: The most common symptom associated with the P1922 code is the illumination of the check engine light on the vehicle's dashboard.
  2. Reduced Fuel Efficiency: A malfunction in the fuel additive system can lead to reduced fuel efficiency, as the engine may not be running optimally.
  3. Rough Idling: The vehicle may experience rough idling or hesitation when accelerating due to the fuel additive system malfunction.
  4. Emission Issues: The vehicle may fail emissions tests or emit higher levels of pollutants due to the improper functioning of the fuel additive system.

How to Fix P1922 Mercury

  1. Diagnose the Issue: The first step in repairing the P1922 code is to diagnose the exact cause of the malfunction, which may involve using a scan tool to read the code and inspecting the fuel additive system components.
  2. Replace Fuel Additive Level Sensor: If the sensor is found to be faulty, it will need to be replaced with a new one to resolve the issue.
  3. Check Wiring: Inspect the wiring connecting the sensor to the computer for any damage or loose connections, and repair or replace as needed.
  4. Inspect Fuel Additive Tank: Check the fuel additive tank for any leaks, blockages, or other issues that may be causing the malfunction, and address them accordingly.
  5. Clear Codes: After the repair is completed, the codes should be cleared from the vehicle's computer to reset the system and ensure the issue has been resolved.

Cost to Fix P1922 Mercury

The cost of repairing a P1922 code for a Mercury vehicle can vary depending on the specific cause of the issue and the labor rates in your area. On average, the parts for this repair, such as a new fuel additive level sensor, can range from $50 to $200. The labor costs can vary, but most auto repair shops charge between $80 and $150 per hour for diagnostic and repair work. Therefore, the total cost for resolving a P1922 code could range from $150 to $500 or more, depending on the extent of the issue and the necessary repairs. It's recommended to contact local auto repair shops for a more accurate estimate based on your vehicle's make and model.

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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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