TIAGO TIGOR BSVI - SERVICE MANUAL - DTC 24-12-2021

TATA BSVI Gasoline Program – EMS ECU Bosch DTC Troubleshooting Service Manual Version: 1.2 Date: 18-12-2019 Prepared By: Sunita Mandlik Checked By: Yeshwant Jadhav Approved By: Satish Kumar Document Part No: 2921 02 xxx xxxx Page: 271 of 1498 Copyright © TATA MOTORS Ltd. This document must not be used in any way, such as copying and redistributing to third parties, without the consent of author. P0172-92: System Too Rich – Performance or Incorrect Operation Overview: ISO Code P0172-92 Customer Symptom Acceleration and Overall vehicle performance will be affected Fault Effects (On Vehicle) 1. Too Rich fuel can heat of the engine as well as exhaust components. 2. Acceleration and overall vehicle performance is affected. 3. Lambda short term and long term adaptations will be switched off. Lamp Status (If Any) MIL ON after 3 drive cycles Fault Detection Condition This fault gets logged if the fuel content in the Air fuel mixture is higher than required or air content is lower than required. Normal Operating Condition Air Fuel Mixture will be appropriate to the Torque and Emissions requirement. Probable Trouble Area Fuel Regulator/ Inlet metering valve stuck open, Injectors, Throttle valve stuck Closed Healing Condition Vehicle running and after 3 drive cycles Fault permanent deletion 1. Clear DTC Command form Scan tool 2. Stack Over Flow. 3. 40 warm up cycles. 4. ECU Flashing. 5. ECU Power-Fail Component Details: NA Preliminary Checks: 1. Excessive fuel supply 2. Bad Fuel Regulator / Inlet metering valve. 3. Throttle valve stuck Open 4. Injector delay time incorrect