Code Definition

P1402 — Fuel tank leakage diagnostic module motor fault

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

About P1402

P1402 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.

P1402 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 contains an electric motor or pump that draws or pushes air to pressure or vacuum test the evaporative emission system for leaks, working under command from the Engine Control Module. DTC P1402 is set on Hyundai and Kia vehicles when the ECM detects a fault in this module motor or its drive circuit, such as an open or shorted motor winding, a seized motor, or a control circuit that does not deliver the expected current. Without a working motor the module cannot build the reference pressure or vacuum needed to run a leak test. There is usually no driveabi...

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