What does OBD2 code P0109 mean?+
P0109 stands for Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent. The MAP sensor signal is cutting in and out intermittently.
What causes code P0109?+
Loose or corroded connector; Chafed wiring; Intermittent sensor failure
How do I fix code P0109?+
Wiggle-test wiring and connector while monitoring live data; Clean or replace connector; Replace sensor if fault persists
How much does it cost to fix P0109?+
Estimated repair cost for P0109 is $100-$250.
Is P0109 DIY-friendly?+
Yes — P0109 is generally DIY-friendly with basic tools.