What Does P2264 Mean?
The water-in-fuel sensor circuit has a general electrical malfunction. This sensor monitors fuel quality and alerts when water contamination is detected in the fuel system, typically found on diesel engines.
Common Causes
35%
Damaged or corroded wiring harness and connectors at the water-in-fuel sensor
30%
Failed water-in-fuel sensor due to corrosion or internal failure
15%
Poor ground connection for the sensor circuit
12%
Corroded or damaged sensor pins in the fuel filter housing
8%
PCM internal circuit fault in water-in-fuel sensor monitoring
Diagnostic Steps
1
Step 1: Visually inspect the water-in-fuel sensor connector for corrosion, damage, or moisture intrusion
2
Step 2: Check sensor wiring for chafing, breaks, or damage along its entire length to the PCM
3
Step 3: Measure voltage and resistance at the sensor connector according to manufacturer specifications
4
Step 4: Test sensor ground circuit for continuity and proper resistance to chassis ground
5
Step 5: If wiring and grounds are good, replace the water-in-fuel sensor and retest
Estimated Repair Cost
$80 - $350
Parts + labor, varies by vehicle and location
The water-in-fuel sensor circuit has a general electrical malfunction. This sensor monitors fuel quality and alerts when water contamination is detected in the fuel system, typically found on diesel engines.
The most common cause of P2264 (Water in Fuel Sensor Circuit) is: Damaged or corroded wiring harness and connectors at the water-in-fuel sensor
Typical repair costs for P2264 range from $80 to $350, depending on the vehicle, location, and whether you do it yourself or go to a shop.
No immediate safety concerns. Loss of water contamination detection may lead to fuel system damage if contaminated fuel is present and goes undetected.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to P2264 to identify the root cause.
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Quick Info
Category
Powertrain
System
Fuel System
Difficulty
Type
Generic (SAE)
Recommended Tools
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