Engine-CodesChevrolet – P111D Chevrolet

P111D Chevrolet Code - Intake Air Temperature Sensor 1 – Fuel Temperature Sensor 2 Correlation

Quick Answer

The P111D code for Chevrolet indicates a correlation issue between the Intake Air Temperature Sensor 1 and Fuel Temperature Sensor 2. Common causes include Faulty Intake Air Temperature Sensor 1, Faulty Fuel Temperature Sensor 2, Wiring issues or poor connections. 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
P111D Chevrolet indicates Intake Air Temperature Sensor 1 – Fuel Temperature Sensor 2 Correlation .
Common causes
Common causes include Faulty Intake Air Temperature Sensor 1, Faulty Fuel Temperature Sensor 2, Wiring issues or poor connections.
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 09, 2024
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Code P111D Chevrolet Description

The P111D code for Chevrolet indicates a correlation issue between the Intake Air Temperature Sensor 1 and Fuel Temperature Sensor 2. The Intake Air Temperature Sensor 1 is responsible for measuring the temperature of the incoming air into the engine, while the Fuel Temperature Sensor 2 monitors the temperature of the fuel in the system. When these two sensors do not correlate correctly, it can lead to various performance issues in the vehicle.

OBDII Code P111D Chevrolet - Intake Air Temperature Sensor 1 – Fuel Temperature Sensor 2 Correlation
P111D Chevrolet Code - Intake Air Temperature Sensor 1 – Fuel Temperature Sensor 2 Correlation

Common Causes of P111D Chevrolet

  1. Faulty Intake Air Temperature Sensor 1
  2. Faulty Fuel Temperature Sensor 2
  3. Wiring issues or poor connections
  4. Corrosion or contamination in the sensor connectors
  5. Software or calibration issues in the engine control module

Symptoms of P111D Chevrolet

  1. Decreased fuel efficiency
  2. Rough idling
  3. Hesitation during acceleration
  4. Engine misfires
  5. Increased emissions

How to Fix P111D Chevrolet

  1. Diagnose the issue by using a scan tool to retrieve the specific code and data from the sensors.
  2. Inspect the Intake Air Temperature Sensor 1 and Fuel Temperature Sensor 2 for any signs of damage or corrosion.
  3. Check the wiring and connections for any faults or poor connections.
  4. Replace the faulty sensor(s) if necessary and reset the fault codes.
  5. Perform a test drive to ensure the code does not reappear and that the vehicle's performance has improved.

Cost to Fix P111D Chevrolet

The typical repair costs for addressing the P111D code can range from $100 to $300, including parts and labor. However, the actual cost may vary depending on the location, vehicle make and model, and engine type. It is recommended to check with local auto repair shops for more accurate pricing information. Additionally, the diagnosis time and labor rates at different shops can impact 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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