AutoCodes – Saturn – P0068 Saturn

P0068 Saturn Code - MAP/MAF - Throttle Position Correlation

Quick Answer

The Powertrain Control Module (PCM) uses the Throttle Position (TP), Barometric Pressure (BARO), Intake Air Temperature (IAT), and engine RPM in order to calculate the predicted mass airflow rate. Common causes include Air leak between the MAF sensor and throttle body, Dirty Throttle body or Mass Air Flow (MAF) sensor, Throttle Position (TP) sensor not seated properly. 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 Saturn indicates MAP/MAF - Throttle Position Correlation.
Common causes: Common causes include Air leak between the MAF sensor and throttle body, Dirty Throttle body or Mass Air Flow (MAF) sensor, Throttle Position (TP) sensor not seated properly.
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 31,012

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 May 16, 2022

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

The Powertrain Control Module (PCM) uses the Throttle Position (TP), Barometric Pressure (BARO), Intake Air Temperature (IAT), and engine RPM in order to calculate the predicted mass airflow rate. The PCM compares the predicted Mass Air Flow (MAF) value to the actual mass airflow value and the speed density calculation in order to verify the proper throttle operation.

OBDII Code P0068 Saturn - MAP/MAF - Throttle Position Correlation - AutoCodes.com — P0068 Saturn Code - MAP/MAF - Throttle Position Correlation

What does this mean?

What are the Possible Causes of the DTC P0068 Saturn?

Air leak between the MAF sensor and throttle body
Dirty Throttle body or Mass Air Flow (MAF) sensor
Throttle Position (TP) sensor not seated properly
Faulty Throttle Position (TP) sensor
Faulty Mass Air Flow (MAF) sensor

How to Fix the DTC P0068 Saturn?

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

On some ION models the problem is an intake leak

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0068 Saturn 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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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 Saturn Code

1. What does OBDII code P0068 on a Saturn indicate?

- OBDII code P0068 on a Saturn indicates a potential issue with the correlation between the manifold absolute pressure (MAP) sensor, mass airflow (MAF) sensor, and throttle position sensor.

2. What are common symptoms of a P0068 code in a Saturn?

- Common symptoms of a P0068 code in a Saturn may include rough idling, reduced engine power, hesitation during acceleration, and in some cases, the vehicle may go into limp mode.

3. What are possible causes of a P0068 code in a Saturn?

- Possible causes of a P0068 code in a Saturn include a faulty MAP sensor, MAF sensor, or throttle position sensor, vacuum leaks, wiring issues, or a problem with the engine control module (ECM).

4. How can I diagnose a P0068 code in my Saturn?

- Diagnosing a P0068 code in your Saturn typically involves checking the MAP sensor, MAF sensor, and throttle position sensor for proper operation, inspecting for any vacuum leaks, and testing the wiring and connections related to these components.

5. How can I repair a P0068 code in my Saturn?

- Repairing a P0068 code in your Saturn may involve replacing a faulty MAP sensor, MAF sensor, or throttle position sensor, fixing any vacuum leaks, repairing damaged wiring, or reprogramming the ECM if necessary.

6. Can I drive my Saturn with a P0068 code?

- It is not recommended to drive your Saturn with a P0068 code, as it can lead to poor engine performance, reduced fuel efficiency, and potential further damage to engine components if left unresolved.

7. How much does it typically cost to fix a P0068 code in a Saturn?

- The cost to fix a P0068 code in a Saturn can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.

8. Will resetting the trouble codes make the P0068 code disappear permanently?

- Resetting the trouble codes may temporarily clear the P0068 code, but if the underlying issue is not addressed and fixed, the code is likely to reappear after driving the vehicle for a certain period of time.

9. Is it possible to prevent the recurrence of a P0068 code in my Saturn?

- Regular maintenance, such as checking and replacing sensors as recommended by the manufacturer, addressing any engine performance issues promptly, and keeping the vehicle in good working condition can help prevent the recurrence of a P0068 code in your Saturn.

10. Can a P0068 code in a Saturn affect the vehicle's emissions?

- Yes, a P0068 code in a Saturn can affect the vehicle's emissions by causing improper air-fuel mixture ratios, potentially leading to increased emissions output and failing emissions tests.