Code Definition

P1105 — MAP/BARO Switch Solenoid Valve

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Nissan

About P1105

P1105 is a manufacturer-specific powertrain diagnostic trouble code recorded for Nissan vehicles. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

P1105 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

For Nissan vehicles, the P1105 fault code is specific to a malfunction in the MAP/BARO Switch Solenoid Valve. This code is set when the Engine Control Module (ECM) detects a problem in the operation or control of the solenoid valve that switches between the Manifold Absolute Pressure (MAP) sensor and the Barometric Pressure (BARO) sensor. This valve is critical for the accurate measurement of air pressure either inside the manifold (MAP) or the external atmospheric pressure (BARO), which the ECM uses for various engine control functions, including fuel delivery and ignition timing.

Quick Facts