P0106
Manifold Absolute Pressure Sensor Range/Performance
The manifold absolute pressure (MAP) sensor signal is implausible relative to throttle position and engine speed. The ECU expects MAP to rise with throttle opening and fall under deceleration; deviation triggers the code.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
What we see in the workshop
ON FORD ECOBOOST
MAP range faults on a turbo engine often point at a boost leak or a blocked reference line rather than a failed sensor.
Common causes
Ordered by how often each turns out to be the cause.
- Vacuum hose to MAP sensor cracked or detachedCommon
- MAP sensor drifting outside specificationPossible
- Intake manifold gasket leakingPossible
Parts involved
- MAP Sensor
- Vacuum Hose
- Intake Manifold
P0106 is a generic OBD-II code defined by SAE J2012. Exact wording and diagnostic procedure vary by manufacturer and model. Code definitions are drawn from the public-domain OBDex dataset; the workshop notes are our own.