P0068 – MAP/MAF – Throttle Position Correlation

Introduction

Let’s break down exactly what the P0068 trouble code means for your Exeed and how to fix it.

What Does Code P0068 Mean

The P0068 trouble code is related to the correlation between the MAP and MAF sensors, which are crucial components of the Engine Control Unit (ECU) system. The MAP sensor measures the absolute pressure inside the intake manifold, while the MAF sensor measures the amount of air entering the engine. When the ECU detects a discrepancy between the two sensors, it triggers the P0068 error, indicating a potential issue with the engine’s air-fuel mixture. This can impact engine performance, fuel efficiency, and overall drivability.

Common Exeed Models Affected

The P0068 error can affect various Exeed models, including:

• Exeed LX
• Exeed TXL
• Exeed RX
• Exeed TX
• Exeed LX Plus

Symptoms Table

The following symptoms may be associated with the P0068 error:

Causes Table

The P0068 error may be caused by the following factors:

Real-World Driving Scenarios

In real-world driving scenarios, the P0068 error may manifest during cold starts, acceleration, or highway driving. Drivers may experience decreased fuel efficiency, rough engine idle, or difficulty accelerating. The issue may be more pronounced in certain driving conditions, such as uphill driving or when carrying heavy loads.

Diagnostic Steps

To diagnose the P0068 error, follow these steps:
1. Inspect the MAP and MAF sensors for any signs of damage or contamination.
2. Use a scan tool to analyze the sensor data and monitor the engine’s performance.
3. Check the wiring and connectors for any damage or corrosion.
4. Perform a vacuum leak test to identify any potential issues with the intake manifold.

Common Diagnostic Mistakes

Common mistakes when diagnosing the P0068 error include:
1. Failing to inspect the MAP and MAF sensors properly.
2. Not using a scan tool to analyze the sensor data.
3. Not checking the wiring and connectors for damage or corrosion.
4. Not performing a vacuum leak test.
5. Replacing the wrong sensor or component.
6. Not consulting the Exeed service manual for specific diagnostic procedures.

When Not to Replace the Sensor

Replacing the MAP or MAF sensor may not solve the issue if the problem lies with the wiring, vacuum leaks, or ECU logic. In such cases, it is essential to identify and address the underlying cause before replacing any components.

How to Fix

To fix the P0068 error, follow these steps:
1. Inspect and clean the MAP and MAF sensors.
2. Replace the faulty sensor or component.
3. Repair any wiring or connector issues.
4. Perform a vacuum leak test and repair any leaks found.
5. Update the ECU software if necessary.

Severity Level

The P0068 error poses a **medium** driving risk, as it may affect engine performance and fuel efficiency. The urgency of repair is **soon**, as prolonged driving with this error may lead to further damage to the engine or other components. The engine impact may include decreased performance, reduced fuel efficiency, and increased emissions.

Is It Safe to Drive with This Code

While it is technically possible to drive with the P0068 error, it is not recommended. The error may affect engine performance, fuel efficiency, and overall drivability, which can lead to safety issues on the road. It is essential to address the issue promptly to avoid any potential risks.

Estimated Repair Cost

The estimated repair cost for the P0068 error can range from $200 to $1,000, depending on the specific cause and the components that need to be replaced.

Preventive Maintenance Tips

To prevent the P0068 error, it is essential to follow regular maintenance schedules, including:
1. Regularly inspecting the MAP and MAF sensors.
2. Checking the wiring and connectors for damage or corrosion.
3. Performing vacuum leak tests.
4. Updating the ECU software as necessary.

Tools Required for Diagnostics

The following tools are required for diagnosing the P0068 error:

• Scan tool
• MAP sensor tester
• MAF sensor tester
• Vacuum leak test kit
• Wiring diagram

Technical Reference Values

The following technical reference values are relevant for diagnosing the P0068 error:

18. FAQ

1. What does code P0068 mean?

The P0068 error code is related to the correlation between the MAP and MAF sensors. It indicates a potential issue with the engine’s air-fuel mixture, which can affect engine performance and fuel efficiency. When diagnosing the P0068 code, it is essential to inspect the MAP and MAF sensors properly and to use a scan tool to analyze the sensor data.

2. Is it safe to drive with code P0068?

While it is technically possible to drive with the P0068 error, it is not recommended. The error may affect engine performance, fuel efficiency, and overall drivability, which can lead to safety issues on the road. Fixing the P0068 code is crucial to avoid any potential risks.

3. Will the code clear itself?

The P0068 error code will not clear itself. It requires proper diagnosis and repair to resolve the issue. Ignoring the code or not addressing the underlying cause may lead to further damage to the engine or other components.

4. Does the sensor need replacement?

The sensor may need replacement if it is faulty or damaged. However, it is essential to diagnose the P0068 code properly to determine the root cause of the issue. Replacing the wrong sensor or component will not solve the problem.

5. How much does it cost to fix?

The estimated repair cost for the P0068 error can range from $200 to $1,000, depending on the specific cause and the components that need to be replaced. Diagnosing the P0068 code and fixing the issue promptly can help avoid further damage to the engine or other components.

Related Trouble Codes

The following trouble codes are related to the P0068 error:

• Error P0101 on Exeed — Mass Airflow Circuit Range/Performance Problem
• Error P0102 on Exeed — Mass Airflow Circuit Low Input
• Error P0103 on Exeed — Mass Airflow Circuit High Input
• Error P0113 on Exeed — Intake Air Temperature Circuit High Input