GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 2007 🢒 Sierra Denali 🢒 Driver Information and Entertainment 🢒 Cellular, Entertainment, and Navigation 🢒 DTC P2269

Diagnostic Instructions
    • Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.
    • Review Strategy Based Diagnosis for an overview of the diagnostic approach.
    •  Diagnostic Procedure Instructions provide an overview of each diagnostic category.

DTC Descriptor

DTC P2269: Water in Fuel

Circuit/System Description

A sensor/switch mounted in the bottom of the fuel filter housing is used to detect water in the fuel. The water in fuel (WIF) sensor/switch has an indicator control circuit and a low reference circuit. The engine control module (ECM) monitors the voltage to the WIF sensor/switch. If the voltage is incorrect, the ECM will illuminate the WIF lamp and set the appropriate DTC.

Conditions for Running the DTC
    • The engine is running.
    • The diagnostic runs continuously.

Conditions for Setting the DTC
    • The engine is running.
    • The WIF sensor/switch voltage is less than 0.20 volt for more than 60 seconds.

Action Taken When the DTC Sets

DTC P2269 is Type C DTC.

Conditions for Clearing the DTC

DTC P2269 is Type C DTC.

Diagnostic Aids
    • If DTC P2269 sets intermittently, fuel contamination may be the cause. Refer to Contaminants-in-Fuel Diagnosis.
    • On vehicle with a WIF float switch, a sticking float may illuminate the WIF lamp and set this DTC.

Reference Information

Schematic Reference

    •  Engine Controls Schematics
    •  Instrument Cluster Schematics

Connector End View Reference

    •  Engine Control Module Connector End Views
    •  Engine Controls Connector End Views

Electrical Information Reference

    •  Circuit Testing
    •  Connector Repairs
    •  Testing for Intermittent Conditions and Poor Connections
    •  Wiring Repairs

Scan Tool Reference

    •  Scan Tool Data List
    •  Scan Tool Output Controls
    •  Scan Tool Data Definitions

Circuit/System Verification
  1. Observe the Water in Fuel Sensor parameter with a scan tool. The parameter should read No Water.
  2. Operate the vehicle within the Conditions for Running the DTC. You may also operate the vehicle within the conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

If any DTCs other than P2269 are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle.

Important: The WIF lamp should be illuminated with this DTC. If the WIF lamp is not illuminated, refer to Water-in-Fuel Lamp Inoperative.

  1. Turn OFF the ignition and drain the fuel filter. Refer to Water-in-Fuel Draining.
  2. Turn ON the ignition and clear the DTC.
  3. Start and run the engine.
    4. ⇒If this DTC resets, test for fuel contamination. Refer to Contaminants-in-Fuel Diagnosis.

Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.