P1104 INFINITI Possible Causes
- Faulty Manifold Absolute Pressure (MAP) sensor
- Manifold Absolute Pressure (MAP) sensor circuit open or shorted
- Poor electrical connection in Manifold Absolute Pressure (MAP) sensor circuit
- Faulty Engine Control Module (ECM)
How to Fix P1104 INFINITI Code?
Start by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Look for damaged components and check for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Illuminated check engine light (or service engine soon warning light)
P1104 INFINITI Meaning
The Manifold Absolute Pressure (MAP) sensor provides instant manifold pressure information to the engine’s Engine Control Module (ECM). This data is used to calculate air density and determine the engine’s mass air flow, which in turn determines the required fuel delivery for optimal combustion. A fuel-injected engine may also use a Mass Air Flow (MAF) sensor to detect intake air flow. A typical configuration uses either one or the other, but rarely both. The MAP/BARO switch solenoid valve switches the air flow passage based on the voltage signal sent by the ECM.
In some Infiniti vehicles, the absolute pressure sensor is integrated into the ECM.