Vehicle Platform & ECU Name DTC Troubleshooting Data Ver: 1.0 Date: 30/11/2019 Author: ERC Page 243 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 P2121-54 - Throttle/Pedal Position Sensor/Switch "D" Circuit Range/Performance Overview: Code Cause Effect on Vehicle Fault Code: 2121-54 1. Throttle position learning deviation is high. 2. Throttle position Sensor has intermittent open or short internally 3. Bad connection at the TPS 4. Bad PCM (less likely) 5. Water or Corrosion in connector or sensor 1.No Malfunction Indicator Lamp (MIL) 2. No check engine lamp 3. Intermittent stumble on acceleration or deceleration 4. Blows black smoke on acceleration 5. No start Trouble Shooting Steps: Sr. No. Steps Rectification Step 1 Check throttle position sensor electrically for open or short Continuity Step 2 Check wiring harness Continuity Step 3 Check connection at throttle position sensor Physical check Step 5 Water or Corrosion in connector or sensor Physical check Step 4 If the problem persists, replace the sensor - Circuit Schematic Diagram: From COC, E & E
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