Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 192 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 P2151-12 : Fuel Injector Group "B" Supply Voltage – Circuit High Overview: Code Cause Effect on Vehicle Fault Code: P2151-12 1. Injector Bank 2 (Cylinder 2 or Cylinder 3) high side pins short to Battery 2. Faulty ECU 1. Idle speed raised 2. Reduced vehicle performance 3. Vehicle Misfire possible 4. Vehicle might not start Component Details: The Solenoid Valve Injectors are used to inject the desired fuel quantity based on the engine operating conditions into the combustion chamber. They are mounted at the cylinder head above the combustion chamber. Checkpoints: Check wiring harness connections related to injector circuit Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check the Battery voltage. If Voltage out of Range, correct battery 06 – 16 V Step 2 Check if injector connector is fitted properly. Rectify if necessary Step 3 Check for pin back outs on injector and ECU connector. Rectify if necessary Step 4 Check for wiring harness circuit continuity. Rectify if necessary Refer circuit diagram Step 5 Replace ECU Circuit Schematic Diagram: Component Location and Image:
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