OBD-II code · Powertrain (generic)
P0068 MAP/MAF - Throttle Position Correlation
The ECU detects implausibility between throttle position and the airflow or intake manifold pressure measured. At a given throttle angle the air mass deviates beyond rationality limits.
Is it safe to drive with P0068?
Usually safe to drive in the short term. Get it diagnosed when convenient, sooner if the car drives differently.
Common causes
- Most likelyLarge unmetered vacuum leak
- PossibleThrottle body dirty or sticking
- PossibleMAF sensor drift
Symptoms
- Check engine light on
- Power loss, hesitation under acceleration
- Rough or unstable idle
- Increased fuel consumption
- Possible difficulty starting
Repair at a glance
- Difficulty
- Medium
- DIY friendly
- Often, with basic tools
- Typical labour
- 0.5–3 h
- Emissions test
- Likely to fail
- After the fix
- A drive cycle is needed before the light stays off
- Parts involved
- Throttle Position Sensor, Mass Air Flow Sensor, Manifold Absolute Pressure Sensor, Intake Manifold, Throttle Body
Related codes
- P0065Air Assisted Injector Control Range/Performance
- P0066Air Assisted Injector Control Circuit Low
- P0067Air Assisted Injector Control Circuit High
- P0069Manifold Absolute Pressure - Barometric Pressure Correlation
- P006AMAP - Mass or Volume Air Flow Correlation Bank 1
- P006BMAP - Exhaust Pressure Correlation
Code data: OBDex open dataset (CC0). Labour times are typical ranges, not a quote.