Engine-CodesLincoln – P1140 Lincoln

P1140 Lincoln Code - Water In Fuel Condition

Quick Answer

The P1140 diagnostic trouble code in a Lincoln vehicle indicates a "Water In Fuel Condition." This code is triggered when there is water present in the fuel system, which can lead to a range of issues affecting the vehicle's performance and overall functionality. Common causes include Condensation in the fuel tank, Fuel cap not sealed properly, Driving through deep water or flooded roads. 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
P1140 Lincoln indicates Water In Fuel Condition.
Common causes
Common causes include Condensation in the fuel tank, Fuel cap not sealed properly, Driving through deep water or flooded roads.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code P1140 Lincoln Description

The P1140 diagnostic trouble code in a Lincoln vehicle indicates a "Water In Fuel Condition." This code is triggered when there is water present in the fuel system, which can lead to a range of issues affecting the vehicle's performance and overall functionality. Water in the fuel system can cause corrosion, damage to fuel injectors, fuel pump failure, and engine misfires. Additionally, it can lead to poor fuel efficiency, rough idling, stalling, and difficulty starting the engine.

OBDII Code P1140 Lincoln - Water In Fuel Condition
P1140 Lincoln Code - Water In Fuel Condition

Common Causes of P1140 Lincoln

  1. Condensation in the fuel tank
  2. Fuel cap not sealed properly
  3. Driving through deep water or flooded roads
  4. Fuel system components leaking or damaged
  5. Fuel contaminated with water from a faulty gas station pump

Symptoms of P1140 Lincoln

  1. Rough idling or engine misfires
  2. Difficulty starting the engine
  3. Poor fuel efficiency
  4. Stalling while driving
  5. Check engine light illuminated on the dashboard

How to Fix P1140 Lincoln

  1. Drain and flush the fuel tank to remove any water and contaminants.
  2. Replace the fuel filter to prevent further contamination.
  3. Inspect and repair any damaged fuel system components such as fuel injectors or fuel pump.
  4. Use a water-removing fuel additive to eliminate any remaining water in the fuel system.
  5. Ensure the fuel cap is sealed properly to prevent future water contamination.

Cost to Fix P1140 Lincoln

The cost of repairing a water in fuel condition in a Lincoln vehicle can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the repair costs for this issue can range from $200 to $500, including parts and labor. It's important to consider that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to contact local shops for a more accurate estimate based on your location and vehicle 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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