Code Definition

P1403 — Fuel tank leakage diagnostic module valve fault

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

About P1403

P1403 is a manufacturer-specific powertrain diagnostic trouble code recorded for Hyundai 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 fuel tank leakage diagnostic module includes a changeover or switching valve, usually a solenoid, that routes the module pump output either to the sealed evaporative emission system for a leak test or to atmosphere during normal venting. The Engine Control Module energises this valve as part of the leak test sequence. DTC P1403 is set on Hyundai and Kia vehicles when the ECM detects a fault in this valve or its control circuit, such as an open or shorted solenoid winding, or a control circuit that does not respond as expected. A faulty valve prevents the module from sealing and pressurisin...

Join TaT to view the complete code information and diagnostic details.

Quick Facts