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Nexon Gasoline – EMS ECU Bosch
DTC Troubleshooting Manual
Version: 0.1
Date: 26-08-2017
Prepared By: Sunu S Babu/Yogesh Jadhav
Checked By: Yeshwant Jadhav
Approved By: Satish Kumar
Document Part No: 2921 02 224 A1736
Page: 1034 of 1203
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.
P2227-23: Barometric Pressure Circuit Range/Performance– Signal Stuck Low
Overview:
ISO Code
P2227-23
Customer Symptom
Vehicle drivability will be affected
Fault Effects (On Vehicle)
Vehicle drivability will be affected
Lamp Status (If Any)
CE Lamp ON after 3 driving cycle
Fault Detection Condition
This fault gets logged when the Barometric Pressure Sensor signal is short
Circuited to ground.
Normal Operating Condition
Proper signal from Barometric Pressure Sensor to EMS ecu
Probable Trouble Area
Barometric Pressure Sensor mounted on EMS ECU
Healing Condition
After 1 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:
EMS ECU is an electronic controller which controls the Engine functionality by interfacing with various Sensors,
actuators and other controllers (via CAN). Barometric Pressure Sensor is Mounted on EMS ecu, which provides the
atmospheric pressure value to EMS ecu.
Preliminary Checks:
1. Check whether the EMS is receiving Battery supply and Ground
2. Check whether the Battery is healthy