Code Definition

P2264 — Water in Fuel Sensor

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Hyundai

About P2264

P2264 is a generic (obd-ii standard) 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.

When P2264 is stored, the module has detected a sensor-related fault — the reported value from the named sensor is out of spec.

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.

Because P2264 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

On Hyundai diesel applications, a water in fuel sensor is fitted to the fuel filter housing to detect water that separates from the diesel and collects at the base of the filter. The sensor uses conductivity probes or a float to change its output once accumulated water reaches the probe level, and the Engine Control Module (ECM) monitors this signal continuously. DTC P2264 is set when the ECM detects a signal indicating the water level is above the calibrated threshold, or when the sensor voltage is implausible, stuck, or outside the specified operating range for a defined period. When the cod...

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