Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1 Date: 23/11/2022 Author: ERC Page 719 of 834 Copyright by TATA MOTORS Ltd. This document must not be used in any w ay, such as copying and redistributing to third parties, w ithout our consent P2227- 22- Barometric Pressure Sensor "A" Circuit Range/Performance - High Overview: Code Cause Effect on Vehicle Fault Code: P2227-22 1. SPI communication failure between Micro and Baro 2. Atmospheric pressure sensor failure 3. Faulty ECU 1. CE Lamp ON 2. Vehicle Misfire possible 3. Reduced vehicle performance 4. Disabled drive mode option Lamp status: Check Engine Lamp on Malfunction Indicator Lamp off Checkpoints: 2. Check ECU externally for any damage or burn marks. Trouble Shooting Steps: Sr. No. Steps Specifications Step 1 Check the Battery voltage at Ignition Off Nominal range – 11.5 to 12.8V Step 2 Check the ECU and Atmospheric pressure sensor for any external damage. Replace the ECU, if damaged. - Step 3 If there is no damage on the ECU but the problem persists. Replace the ECU and contact the supplier - Associated Parameters: Parameter Label Description DID Monitoring Atmospheric pressure raw Current Atmospheric pressure in KPa read by the ECU FE9C Reads 100 KPa at sea level. Decrease with increase in altitude from sea level Verification condition: Drive the vehicle in city and highway condition for 20 mins.
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