P1111 SUBARU Possible Causes
- Intake system
- Faulty engine control module (ECM)
- Engine control module harness is open or shorted
- Poor electrical connection in engine control module circuit
How to Fix P1111 SUBARU Code?
Start by checking the “possible causes” listed above. Visually inspect the corresponding wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
What Does It Mean?
The atmospheric pressure sensor is integrated into the engine control module (ECM) and cannot be serviced separately. The engine control module uses sensor inputs such as intake air pressure, intake air temperature, and throttle position to calculate an atmospheric pressure reading.
Possible Symptoms
Check engine light on (or service engine soon warning light)
P1111 SUBARU Meaning
This sensor measures the atmospheric pressure the vehicle is experiencing. The diagnostic trouble code (DTC) sets when the engine control module (ECM) detects a high voltage signal from the atmospheric pressure sensor.