Maintenance instruction for sunray hfc4da1-2c china-IV diesel engines
194
32.
DTC
P2264
There are faults in water level sensor of diesel filter oil-water separator.
P2267 Water in diesel filter oil-water separator is overflowed.
Fault Description: Main function of oil-water separator is to separate moisture from oil in fuel to ensure combustion
quality of fuel. When fuel oil goes through oil-water separator, oil content and moisture content in the fuel are
separated. For water density is larger than that of oil, separated water is stored in “water tank” under filter element.
Fuel filter lower water level sensor is applied in water level detection in “water tank”. When accumulated water
reaches certain level, warning lamp on instrument panel will be lightened to remind driver to carry out draining. In the
case of delayed water drainage, DTC occurs.
Diagnosis Hint: In the case of DTC existence, it is necessary to check water level first of all. Normally, carry out
water drainage for every 8000-10000km engine running. For oil quality problems, water drainage should be carried
out ahead of time for fuel which contains much moisture. Besides, test relevant connectors for this diagnostic
procedure for short circuit of terminals or poor contact of wire, avoiding water level sensor signal distortions caused
by short circuit or poor contact.
Water level signal
Drain switch