Code Definition

P1105 — Fuel Pressure Solenoid malfunction

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

About P1105

P1105 is a manufacturer-specific powertrain diagnostic trouble code recorded for Chrysler 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 Chrysler vehicles, the P1105 fault code relates to a malfunction in the fuel pressure solenoid, the device the PCM uses to regulate fuel delivery pressure. On a direct injection engine this is typically the fuel metering or pressure control valve on the high pressure fuel pump, which the PCM commands to hold rail pressure at the target value. The code is set when the solenoid control circuit is open, shorted, or out of range, or when actual fuel pressure does not follow the commanded value. Symptoms can include hard starting, a rough or stalling idle, lack of power, hesitation under load, a...

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