Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 299 of 610 Copyright by TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without our consent P2266-00 : Water in Fuel Sensor Circuit Low Overview: Code Cause Effect on Vehicle Fault Code: P2266-00 1. Defective water in fuel sensor 2. Contaminated fuel 3. Blown fuse or fuse-able link (if applicable) 4. Defective or worn fuel filter 5. Corroded or damaged connector 6. Faulty or damaged wiring 7. Faulty ECU 1. Engine may stall 2. Severe misfiring 3. Engine will not start 4. Poor fuel economy 5. Poor performance 6. Check engine light illuminated 7. Water in fuel light illuminated Component Details: Water is separated by the filter medium using the repellent effect. Separated water gets collected in the bottom chamber of the sedimentor body. Sedimentor is mounted on the long member of chassis behind mud flap of left front wheel. The water-in-fuel (WIF) sensor senses the presence of water collected in the bottom chamber and provides the information to EMS ECU which lits WIF tell-tale on IC to indicate the driver. Collected water is drained manually by opening a water drain plug at the bottom of the sedimentor body. This helps to prevent corrosion & damage to components of common rail system. Trouble Shooting: Step Checks Rectification 1 Check whether fuel is contaminated with water Drain water 3 Check if WIF sensor is faulty Physical/ Electrical check 4 Check for any related fuse blown Physical check 5 Check for any corrosion or damaged sensor connector Physical check 8 Check for faulty or damaged wiring Replace /repair WH 9 Check for defective or worn filter Replace filter 13 ECU faulty Replace ECU
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