P0107
Manifold Absolute Pressure Sensor Low Input
The MAP sensor reports a pressure below the lower threshold the ECU expects at any engine state. Typically indicates a hard electrical fault rather than a slow drift.
- Check engine light: Yes
- Emissions related: Yes
- Repair difficulty: easy
Common causes
Ordered by how often each turns out to be the cause.
- Signal wire shorted to groundCommon
- MAP sensor failedPossible
- 5V reference voltage missingLess likely
Parts involved
- MAP Sensor
- MAP Sensor Wiring
P0107 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.