Code Definition

P1105 — Fuel Pressure Solenoid

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

About P1105

P1105 is a manufacturer-specific powertrain diagnostic trouble code recorded for Mitsubishi 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

In Mitsubishi vehicles, the P1105 fault code relates to a malfunction in the fuel pressure solenoid or its control circuit. This code is set when the Powertrain Control Module (PCM) detects that the fuel pressure solenoid is not controlling fuel pressure as commanded. The solenoid is part of the fuel system and regulates the pressure of fuel delivered to the engine, allowing the PCM to hold rail pressure at the target value across changing load and speed. When this code is set the driver may notice hard starting, rough idle, hesitation, misfire, a lack of power, or stalling, along with possibl...

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