Code Definition

P1403 — Evaporative Emission system leak detection solenoid

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

About P1403

P1403 is a manufacturer-specific powertrain diagnostic trouble code recorded for Kia 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.

P1403 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

The evaporative emission leak detection solenoid is part of the EVAP system the Engine Control Module (ECM) uses to seal and pressurise or evacuate the fuel vapour system so it can test for leaks. The ECM energises this solenoid during the leak detection routine and monitors its control circuit. DTC P1403 sets when the ECM detects a fault in the leak detection solenoid circuit, such as an open, a short, or current draw outside the expected range. This is usually a wiring, connector, or solenoid coil fault rather than the ECM. Because the fault is in the diagnostic side of the EVAP system, the ...

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