TIAGO/TIGOR AMT Gasoline DTC Troubleshooting Guide Version: 4.0 Date: 18-04-2017 Author: Sathi/Anupama Page: 416 of 427 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. Diagnostic Trouble Codes List Sr. No DTC Description as per ISO/SAE Fault Cause Probable Trouble Area 1 P091402 Gear Position Sensor Circuit– Fixed Signal High Level - Short circuit to battery - Open circuit on Sensor connection Or TCU - GND loss - sensor supply loss - Loose mechanical fitment of TCU - Loose mechanical fitment of Sensor - TCU internal damage 2 P091401 Gear Position Sensor Circuit– Fixed Signal Low Level -Short circuit to ground on sensor -TCU Connection - Loose mechanical fitment of TCU - Loose mechanical fitment of sensor - TCU internal damage 3 P091403 Gear Position Sensor Circuit– Period Error -Sensor Problem - Sensor damage - TCU internal damage 4 P091405 Gear Position Sensor Circuit– PWM Duty high -Sensor Hardware - error - Sensor damage - TCU internal damage 5 P091404 Gear Position Sensor Circuit– PWM Duty low - Sensor problem (magnet lost) - Sensor damage - TCU internal damage 6 P185302 Gear/shift Position Sensor– Wrong supply voltage Vbatt Error -TCU damage -Short circuit to V supply on-Sensor supply connection - Sensor damage - TCU internal damage 7 P185301 Gear/shift Position Sensor– Wrong supply voltage GND Error -TCU damage -Short circuit to V supply on-Sensor supply connection - Sensor damage - TCU internal damage 8 P090402 Shift Position Sensor Circuit– Fixed Signal High Level -Short to Supply or open circuit on Sensor(signal) -Short to Supply or open circuit on TCU -Sensor GND loss -Sensor supply loss - Loose mechanical fitment of TCU -Loose mechanical fitment of Sensor -Loose or damage or short circuit internally -TCU internal damage 9 P090401: Shift Position Sensor Circuit– Fixed Signal Low Level -Short circuit to GND on Sensor -Short circuit to GND on TCU - Loose mechanical fitment of TCU - Loose mechanical fitment of Sensor - Loose or damage or short circuit internally -TCU internal damage 10 P090403 Shift Position Sensor Circuit– Period Error -Sensor Problem - Sensor damage - TCU internal damage 11 P090405 Shift Position Sensor Circuit– PWM Duty high -Sensor Hardware error - Sensor damage - TCU internal damage 12 P090404 Shift Position Sensor Circuit– PWM Duty low -Sensor Algorithm Error (sensor problem, magnet lost) - Sensor damage - TCU internal damage
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