P006C Fault Code

MAP - Turbocharger/Supercharger Inlet Pressure Correlation

• What does that mean?
• Symptoms
• Causes
• Solutions

The P006C fault code refers to a correlation issue between the Manifold Absolute Pressure (MAP) sensor and the Turbocharger or Supercharger Inlet Pressure sensor. This code typically applies to turbocharged or supercharged vehicles.

The MAP sensor measures the intake manifold pressure, while the Turbocharger or Supercharger Inlet Pressure sensor monitors the pressure at the turbocharger or supercharger inlet. These sensors should provide correlated readings to ensure the efficient performance of the forced induction system.

When the P006C code is triggered, it indicates that there is a discrepancy between the MAP sensor and the Turbocharger or Supercharger Inlet Pressure sensor readings, suggesting a problem with the correlation between the two.

The possible causes of this fault code include:

1. Faulty MAP sensor or Turbocharger/Supercharger Inlet Pressure sensor.
2. Wiring or connector issues related to these sensors.
3. Blockages in the intake system affecting pressure readings.
4. Vacuum leaks in the intake system.
5. Malfunctioning turbocharger or supercharger.

To diagnose and resolve this issue, you should:

1. Inspect the wiring and connectors for any signs of damage or corrosion. Repair or replace as necessary.
2. Check for any blockages in the intake system, such as clogged air filters or cracked hoses. Clean or replace affected components.
3. Perform a thorough inspection of the turbocharger or supercharger for any issues, like worn-out bearings or damaged fins.
4. Test the MAP sensor and Turbocharger/Supercharger Inlet Pressure sensor using a diagnostic scanner to verify their readings and functionality. Replace any faulty sensors.

If you are not familiar with car repairs or lack the necessary tools, it is recommended to seek assistance from a qualified mechanic. They will have the expertise and equipment to properly diagnose the issue and carry out the appropriate repairs.

What are the symptoms of the P006C code?

The P006C fault code on cars is related to the MAP (Manifold Absolute Pressure) sensor and indicates a correlation issue between the turbocharger or supercharger inlet pressure and the MAP sensor input. This can cause various symptoms, including:

• Decreased engine performance or power
• Poor acceleration
• Engine hesitation or stalling
• Rough idle
• Increased fuel consumption
• Illuminated check engine light (MIL)
• Reduced turbocharger or supercharger efficiency

It is important to note that these symptoms may vary depending on the make and model of the vehicle. It is recommended to consult a professional mechanic or use a diagnostic tool to identify and resolve the exact cause of the issue.

What causes the P006C code?

The P006C fault code indicates a correlation problem between the turbocharger/supercharger inlet pressure and the manifold absolute pressure (MAP) sensor. This fault code can occur due to various reasons, including:

1. Faulty MAP sensor: A malfunctioning MAP sensor can produce inaccurate readings, leading to a correlation problem with the turbocharger/supercharger inlet pressure.

2. Turbocharger/supercharger issues: Problems with the turbocharger or supercharger, such as a leak or malfunctioning wastegate, can cause a disparity between the actual inlet pressure and the expected pressure indicated by the MAP sensor.

3. Intake air leaks: Air leaks in the intake system, such as cracked hoses or gaskets, can disrupt the proper flow of intake air, resulting in a mismatch between the actual inlet pressure and the MAP sensor's readings.

4. Wiring/connectivity problems: Faulty electrical connections, damaged wiring, or loose connectors between the MAP sensor and the engine control module (ECM) can lead to incorrect pressure readings and trigger the P006C fault code.

5. ECM issues: In some cases, a software glitch or malfunction within the ECM can cause incorrect pressure correlation, resulting in the P006C fault code.

To diagnose and resolve the P006C fault code, it is recommended to:

1. Inspect the MAP sensor and related wiring: Check for any visible signs of damage or loose connections in the MAP sensor and its wiring harness. Repair or replace any faulty components as necessary.

2. Inspect the turbocharger/supercharger system: Examine the turbocharger or supercharger for any signs of leaks, damage, or malfunction. Ensure the wastegate is operating properly. Repair or replace any faulty components.

3. Check for intake air leaks: Inspect the intake system for any air leaks, such as cracks in hoses or gaskets. Repair or replace any damaged components.

4. Reset the fault code: Clear the fault code with a diagnostic scanner and see if it reoccurs. If it does, further investigation may be required.

5. Consult a professional: If you are unsure or unable to diagnose and fix the issue yourself, it is advisable to seek assistance from a qualified mechanic or automotive technician who can properly diagnose and resolve the P006C fault code.

How to fix P006C?

The P006C fault code indicates a correlation problem between the turbocharger/supercharger inlet pressure and the manifold absolute pressure (MAP) sensor. Here are some possible solutions to fix this issue:

1. Inspect and clean the MAP sensor: Start by locating the MAP sensor, usually found on or near the intake manifold. Remove the sensor and clean it using electrical contact cleaner. Check for any signs of damage or corrosion and replace if necessary.

2. Check the turbocharger/supercharger system: Inspect the turbocharger/supercharger system for any leaks, blockages, or malfunctions. Ensure that the inlet pressure sensor is securely connected and functioning properly.

3. Verify the vacuum lines: Check the vacuum lines connected to the turbocharger/supercharger system for any leaks, cracks, or loose connections. Replace or repair any faulty vacuum lines as needed.

4. Reset the fault codes: After addressing the possible causes, clear the fault codes using an OBD-II scanner or by disconnecting the battery for a few minutes. This will reset the vehicle's computer system and allow it to relearn and recalibrate the sensors.

5. Take it to a professional: If you are unable to diagnose or fix the problem yourself, it is advisable to take your car to a qualified mechanic or dealership for further inspection and repairs. They can use advanced diagnostic tools to pinpoint the exact cause of the issue and provide a proper fix.

Note: It is important to consult the vehicle's repair manual or seek professional assistance for specific troubleshooting steps, as the procedures may vary depending on the make and model of your car.