P1118 Manifold Absolute Temperature Circuit Low Input
What does P1118 mean on a Ford?
P1118 — Manifold Absolute Temperature Circuit Low Input. This Ford-enhanced code applies to Ford models with manifold temperature sensing.
Common causes of P1118
- Shorted manifold temperature sensor
- Signal wire shorted to ground
- Failed sensor stuck low
- Connector contamination
- PCM reference fault
How to fix P1118
- Check the sensor wiring for shorts
- Disconnect and observe the reading change
- Test sensor resistance
- Clean the connector
- Replace the sensor if out of specification