AutoCodes – Lincoln – P0068 Lincoln

P0068 Lincoln 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 the Throttle Position (TP) to Mass Air Flow (MAF) Sensor readings (if equipped) or to the Manifold Absolute Pressure (MAP) Sensor readings (if equipped). Common causes include Air leak at any connection or line of the intake air system components before or after the Electronic Throttle Body (ETB), Leak in the Positive Crankcase Ventilation (PCV) System, Throttle Position (TP) Sensor not seated correctly. 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 Lincoln indicates Manifold Absolute Pressure/Mass Air Flow Sensor - Throttle Position Correlation.
Common causes: Common causes include Air leak at any connection or line of the intake air system components before or after the Electronic Throttle Body (ETB), Leak in the Positive Crankcase Ventilation (PCV) System, Throttle Position (TP) Sensor not seated correctly.
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 315

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 Sep 08, 2023

Description
Step-by-Step Diagnostic Guide
Possible Causes
How To Fix
Cost to Diagnose
FAQs
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Code P0068 Lincoln Description

The Powertrain Control Module (PCM) monitors a vehicle operation rationality check by comparing the Throttle Position (TP) to Mass Air Flow (MAF) Sensor readings (if equipped) or to the Manifold Absolute Pressure (MAP) Sensor readings (if equipped). This continuous memory Diagnostic Trouble Code (DTC) sets when during a Key ON, Engine Running (KOER) self-test, the comparison of the readings are not consistent with the calibrated load values.

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

What does this mean?

What are the Possible Causes of the DTC P0068 Lincoln?

Air leak at any connection or line of the intake air system components before or after the Electronic Throttle Body (ETB)
Leak in the Positive Crankcase Ventilation (PCV) System
Throttle Position (TP) Sensor not seated correctly
Faulty Mass Air Flow (MAF) Sensor (if equipped)
Manifold Absolute Pressure (MAP) Sensor (if equipped)
Faulty Throttle Position Sensor

How to Fix the DTC P0068 Lincoln?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0068 Lincoln 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.

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Need more information on how to fix the P0068 Lincoln 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 Lincoln Code

1. What does the OBDII code P0068 mean on a Lincoln?

P0068 indicates a correlation issue between the Manifold Absolute Pressure (MAP) sensor, Mass Air Flow (MAF) sensor, and Throttle Position Sensor (TPS). The engine control module detects that the readings from these sensors do not align as expected.

2. What are the common symptoms of code P0068 on a Lincoln?

Symptoms may include rough idling, poor acceleration, engine stalling, decreased fuel efficiency, and the check engine light turning on.

3. What causes the P0068 code on a Lincoln?

Common causes include a faulty MAP sensor, MAF sensor, or TPS, vacuum leaks, a dirty throttle body, faulty wiring or connectors, or even a malfunctioning engine control module (ECM).

4. Can a dirty throttle body trigger a P0068 code on a Lincoln?

Yes, a dirty or clogged throttle body can cause airflow inconsistencies, leading to a P0068 code.

5. How do you diagnose the P0068 code on a Lincoln?

Diagnosis involves checking sensor readings with a scan tool, inspecting the sensors and wiring for damage, looking for vacuum leaks, and cleaning the throttle body if necessary.

6. Can a vacuum leak cause a P0068 code on a Lincoln?

Yes, a vacuum leak can disrupt the airflow measurements, causing the sensors to report inconsistent data and trigger the P0068 code.

7. How serious is the P0068 code on a Lincoln?

P0068 is moderately serious as it can lead to poor engine performance and increased emissions. It should be addressed promptly to avoid further engine or sensor damage.

8. How can I fix the P0068 code on my Lincoln?

Fixes may include cleaning or replacing the MAP, MAF, or TPS sensors, repairing vacuum leaks, cleaning the throttle body, or addressing wiring and connector issues.

9. Can I drive my Lincoln with a P0068 code?

Driving with a P0068 code is not recommended, as it can cause reduced performance, potential stalling, and damage to other engine components over time.

10. How much does it cost to repair a P0068 code on a Lincoln?

Repair costs vary depending on the issue. Replacing a sensor may cost $100-$300, while fixing vacuum leaks or cleaning the throttle body could be less expensive. Labor rates and parts pricing also affect the overall cost.