AutoCodes – Ford – P0068 2008 Ford Fusion

P0068 2008 Ford Fusion Code - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation

Quick Answer

The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. Common causes include Faulty Mass Air Flow (MAF) sensor, Large vacuum leak, Leaking air duct system. 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: P0068 2008 Ford Fusion indicates Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation.
Common causes: Common causes include Faulty Mass Air Flow (MAF) sensor, Large vacuum leak, Leaking air duct system.
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.

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Code Popularity 4,761

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Intermediate (2 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jun 14, 2020

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0068 2008 Ford Fusion Description

The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing sensed throttle position to mass air flow readings. If during a key on engine running(KOER) self-test, the comparison of the throttle position (TP) sensor and MAF sensor readings are not consistent with the calibrated load values, the test fails and a DTC is stored in continuous memory.

OBDII Code P0068 2008 Ford Fusion - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation - AutoCodes.com — P0068 2008 Ford Fusion Code - Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation

What does this mean?

What are the Possible Causes of the DTC P0068 2008 Ford Fusion?

Faulty Mass Air Flow (MAF) sensor
Large vacuum leak
Leaking air duct system
Mass Air Flow (MAF) poor electrical connection
Manifold Absolute Pressure (MAP) poor electrical connection
Faulty Manifold Absolute Pressure (MAP) sensor
TP sensor not seated properly
Faulty Throttle Position (TP) sensor

How to Fix the DTC P0068 2008 Ford Fusion?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

Check for intake leaks if none are found, you can try to clean the air flow meter with mass air flow sensor cleaner and the throttle plate which gets dirty and may cause the Throttle Position (TP) sensor to give an incorrect reading.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0068 2008 Ford Fusion code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0068 2008 Ford Fusion code?

Need more information on how to fix the P0068 2008 Ford Fusion code? Get Access to Factory Service Manuals

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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.

Frequently Asked Questions about P0068 2008 Ford Fusion Code

1. What are the common symptoms of OBDII code P0068 on a 2008 Ford Fusion?

The common symptoms of code P0068 include rough idling, poor acceleration, engine stalling, and a decrease in fuel efficiency.

2. What does the OBDII code P0068 indicate for a 2008 Ford Fusion?

Code P0068 indicates an issue with the correlation between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and Throttle Position Sensor (TPS).

3. What are the possible causes of OBDII code P0068 on a 2008 Ford Fusion?

Possible causes of code P0068 include a faulty MAP sensor, MAF sensor, TPS, wiring issues, vacuum leaks, or a problem with the intake manifold.

4. How can I diagnose the OBDII code P0068 on a 2008 Ford Fusion?

Diagnosing code P0068 involves checking the MAP sensor, MAF sensor, TPS, and related wiring for any signs of damage or malfunction using a diagnostic scanner.

5. Can I continue to drive my 2008 Ford Fusion with OBDII code P0068?

It is not recommended to drive your Fusion with code P0068 as it can lead to further damage to the engine components and negatively impact performance.

6. How can I repair OBDII code P0068 on a 2008 Ford Fusion?

Repairing code P0068 may involve replacing the faulty MAP sensor, MAF sensor, TPS, or repairing any wiring issues. It's recommended to consult a professional mechanic for an accurate diagnosis and repair.

7. Are there any DIY tips for fixing OBDII code P0068 on a 2008 Ford Fusion?

While some basic checks like inspecting the sensor connections and vacuum hoses can be done DIY, it's best to seek professional help for a thorough diagnosis and repair of code P0068.

8. What is the importance of the Manifold Absolute Pressure sensor in the context of OBDII code P0068?

The MAP sensor measures the pressure within the intake manifold and helps the engine control module optimize air-fuel mixture, making it crucial for proper engine performance.

9. How does the Mass Air Flow sensor relate to OBDII code P0068 on a 2008 Ford Fusion?

The MAF sensor measures the amount of air entering the engine to adjust fuel delivery, and a malfunctioning MAF sensor can trigger code P0068 due to the correlation with other sensors.

10. Can a dirty air filter cause OBDII code P0068 on a 2008 Ford Fusion?

A dirty air filter can indirectly affect the readings of the MAF sensor, potentially leading to issues with the correlation between sensors and triggering code P0068. Regular air filter maintenance is recommended.