What does P0068 mean?
The computer compares airflow (from the MAF or MAP sensor) with throttle position. They should agree. When airflow is too high or low for the throttle opening, it sets P0068.
Codes are a starting point. They tell you which test failed, not which part to replace. Check for other stored codes and fix those in a sensible order.
Symptoms
- Check engine light
- Reduced power or limp mode
- Rough idle
Common causes
- Vacuum leak after the throttle body
- Dirty or failing MAF sensor
- Failing throttle body or TPS
- Intake boot leak
How to diagnose P0068
- Check for vacuum and intake leaks.
- Compare MAF, MAP and throttle readings in live data.
- Clean the throttle body and MAF.
How to fix it
- Repair leaks
- Clean or replace the MAF
- Replace the throttle body
Estimated repair cost
Likely repairs for P0068 run from about $100 to $900, depending on the cause.
| Repair | Typical range (parts + labor) |
|---|---|
| Diagnostic fee (scan + testing) | $100 - $200 |
| Vacuum leak repair (hose/gasket) | $100 - $450 |
| Mass airflow sensor replacement | $150 - $450 |
| Electronic throttle body replacement | $300 - $900 |
These are rough US estimates for an independent shop in 2026, based on typical parts prices and standard labor times. Dealers, big trucks, luxury brands and high-cost areas often run higher. They are not quotes. Use the repair cost estimator to adjust for your vehicle.
How serious is P0068?
Moderate severity
Drivable if not in limp mode, but get it checked.
P0068 FAQ
What does P0068 mean?
P0068 stands for "MAP/MAF - Throttle Position Correlation". The computer compares airflow (from the MAF or MAP sensor) with throttle position.
Can I drive with a P0068 code?
Drivable if not in limp mode, but get it checked.
How much does it cost to fix P0068?
It depends on the cause. The likely repairs for P0068 range from about $100 to $900 at an independent shop in the US, plus a diagnostic fee of roughly $100-$200. These are rough estimates; dealer prices and some vehicles run higher.
What is the most common cause of P0068?
The most common causes are: vacuum leak after the throttle body; dirty or failing MAF sensor; failing throttle body or TPS.