P2074
Manifold Absolute Pressure/Mass Air Flow - Throttle Position Correlation at Higher Load
Fuel & air metering
Generic OBD-II
Medium
What it means
P2074 means that under higher load the airflow the MAP or MAF sensor reports doesn't agree with the throttle position the PCM expects. The mismatch usually points to a vacuum leak or a faulty air/throttle sensor. The engine still starts and runs, but you may feel hesitation or reduced power under acceleration and see worse fuel economy.
Medium
Can I keep driving? Usually drivable, but you may feel hesitation or reduced power under load, and economy can drop — have it diagnosed soon.
Common symptoms
What you'll notice
- Check-engine light on
- Hesitation or reduced power under acceleration / heavy load
- Rough running or surging at higher throttle openings
- Poorer fuel economy
Common causes
Most likely first
- Intake manifold vacuum leak (most common)Likely
- Faulty or contaminated MAP or MAF sensorCommon
- Throttle position sensor out of range or throttle body faultCommon
- Corroded or loose MAP/MAF/TPS wiring or connectorsLess often
- Restricted air filter or intake affecting airflow readingsLess often
How to diagnose & fix
Work through it in order
- Read freeze-frame data and compare MAP, MAF, and TPS values against each other at idle and under load.
- Inspect the intake for vacuum leaks (cracked hoses, loose clamps, gasket leaks).
- Check the MAP/MAF and throttle position sensor wiring and connectors; clean the MAF if dirty.
- Verify the throttle body operates smoothly and the air filter isn't clogged. Clear and re-test.
FAQ
Quick answers
Is it safe to drive with P2074?+
Short trips are fine, but the engine may hesitate or lose power under load and burn more fuel. Because a vacuum leak or bad sensor can worsen, get it checked soon.
Can I just clear P2074?+
It returns under load until the leak or sensor mismatch is fixed. Start by checking for vacuum leaks.
Related codes
Often seen with P2074
Read & clear P2074 yourself
Scan your car, confirm the code, and clear it once it's fixed — with OBD DashX on your phone.
✓ Verified name — SAE J2012 / ISO 15031-6Guidance reviewed by OBD DashX