Fault Family System: Powertrain (P-Codes) 13 SAE Codes

Water In Fuel System

Diagnostic & Technical Explanation

P2264 (Water in Fuel Sensor A Circuit) comes from the conductivity probe in the diesel fuel filter housing that warns when separated water has collected above the sensor level, and covers both the genuine water-detected condition and faults in the sensor or warning-lamp circuit. If water is actually present, draining the separator and finding the contamination source protects the injection system from corrosion damage; if the bowl is dry, the probe's exposed electrodes commonly corrode or bridge with debris and read falsely.

These 13 diagnostic trouble codes share one detection mechanism and one repair path, which is why MechanicDB groups them into a single authored fault family rather than repeating the same explanation 13 times.

Codes in this family (13)

Code	Definition	Repair coverage
P2264	Water in Fuel Sensor A Circuit	4 ranked fixes
P2265	Water in Fuel Sensor A Circuit Range/Performance	4 ranked fixes
P2266	Water in Fuel Sensor A Circuit Low	4 ranked fixes
P2267	Water in Fuel Sensor A Circuit High	4 ranked fixes
P2268	Water in Fuel Sensor A Circuit Intermittent	4 ranked fixes
P2269	Water in Fuel Condition - Sensor A	4 ranked fixes
P226A	Water in Fuel Lamp Control Circuit	4 ranked fixes
P238A	Water in Fuel Sensor B Circuit	4 ranked fixes
P238B	Water in Fuel Sensor B Circuit Range/Performance	4 ranked fixes
P238C	Water in Fuel Sensor B Circuit Low	4 ranked fixes
P238D	Water in Fuel Sensor B Circuit High	4 ranked fixes
P238E	Water in Fuel Sensor B Circuit Intermittent	4 ranked fixes
P238F	Water in Fuel Condition - Sensor B	4 ranked fixes

What this page does not show

This page publishes the fault mechanism and the code index. The licensed dataset adds, for every one of the 15,886 codes, the full authored repair set (56,729 procedures in total) with the fields deliberately withheld here:

Procedures 2..n after the first-listed procedure
Aftermarket parts cost ranges in USD (est_parts_cost_min/max_usd)
Professional labor-hour estimates (est_labor_hours)
Step-by-step diagnostic and repair instructions
Replacement-part mappings and catalog lookups
6,637 manufacturer-specific OEM codes across 32 makes ($149 tier)

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