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Hino P2269 Fault Code: Water In Fuel Condition

25/11/2025

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Technical Description

Water trapped in the fuel filter has been detected.

DTC Set Condition

DTC Detection Condition:

− Starter switch ON.

− Battery voltage is in the range of 10 V to 16 V.

Judgment Criteria:

Fuel filter water level sensor switch is ON.

Reset Condition

Check that water has not accumulated in the fuel filter.

Indication, Warning Or System Control Regulation When The DTC Is Set

− MIL: OFF

− SVS light: OFF

Pre – Inspection Work

Check that the battery voltage is in the normal range.

After – Inspection Work

− Clear all past DTCs.

− Check that no DTC is stored after test drive.

Possible Causes

Water has been trapped in the fuel filter.

Inspection procedure troubleshooting steps

Troubleshooting Steps

Step 1) Inspect the fuel filter.

Check if water has accumulated in the fuel filter.

Were any failures found?

Yes – Drain water out of the fuel filter.

Clear all past DTCs. Check that no DTC is detected after test drive.

No – Go to Step 2.

Step 2) Inspect the fuel filter water level sensor connector.

Check the connection of the water level sensor connector (Looseness and poor contact).

Were any failures found?

Yes – Connect securely, repair if needed.

Clear all past DTCs. Check that no DTC is detected after test drive.

No – Go to Step 3.

Step 3) Inspect the fuel filter water level sensor unit.

Set the starter switch to the “LOCK” position.
Disconnect the fuel filter water level sensor connector.
Connect a battery between the 12 V terminal in the fuel filter water level sensor and the GND terminal.
Use the electrical tester to measure the voltage between the fuel filter water level sensor SIGNAL terminal and GND terminal.

MEASUREMENT CONDITIONS

TESTER CONNECTIONS

STANDARD VALUES

Starter switch:

LOCK

Fuel filter water level sensor SIGNAL – GND

0 V (no water)

0.6 – 0.7 V

(Water level within allowable

range)

Do the measurements meet the standard value?

Yes – Go to Step 4.

No – Replace the fuel filter water level sensor.

Clear all past DTCs. Check that no DTC is detected

after test drive.

Step 4) Inspect the fuel filter water level sensor power supply.

Set the starter switch to the “ON” position.
Use the electrical tester to measure the voltage between the terminals of the fuel filter water level sensor vehicle-side connector.

MEASUREMENT

CONDITIONS

TESTER CONNECTIONS

STANDARD VALUES

Starter switch: ON

Fuel filter water level sensor

vehicle-side connector

F/FF – F/FG

10 – 16 V

Do the measurements meet the standard value?

Yes – Go to Step 5.

No – Inspect the fuel filter water level sensor power circuit.

Clear all past DTCs. Check that no DTC is detected after test drive.

Step 5) Inspect for short-circuit in wire harness of the fuel filter water level sensor.

Set the starter switch to the “LOCK” position.
Connect the signal check harness. (Do not connect the harness to the ECU).
Use the electrical tester to measure the resistance between the engine ECU (signal check harness) WIF (V42) terminal and ground.

MEASUREMENT

CONDITIONS

TESTER CONNECTIONS

STANDARD VALUES

Starter switch:

LOCK

Engine ECU (signal check harness)

WIF(V42) – Ground

∞ Ω

Do the measurements meet the standard value?

Yes – Go to Step 6.

No – Repair or replace the harness.

Clear all past DTCs. Check that no DTC is detected after test drive.

Step 6) Inspect for disconnection in wire harness of the fuel filter water level sensor.

Use the electrical tester to measure the resistance between the engine ECU (signal check harness) terminal and fuel filter water level sensor vehicle-side connector terminal.

MEASUREMENT

CONDITIONS

TESTER CONNECTIONS

STANDARD VALUES

Starter switch:

LOCK

Engine ECU (signal check harness) – Fuel filter water level sensor vehicle-side connector

WIF(V42) – F/FS

Less than 1 Ω