Doosan Machine Code P02E8 – Throttle Position Sensor Voltage Low

This error code indicates that the throttle position sensor (TPS) voltage is below the acceptable limit. Here’s a guide to diagnosing and addressing the issue:

Preparations:

Doosan Data Monitoring System DMS-5 DMS-3 Free Download
Doosan Diagnostic Tooldoosan dsm-5

1) Overview

The P02E8 code signifies that the TPS signal voltage is lower than the minimum threshold. This can affect throttle response and overall machine performance.

2) Wiring Information

• 444 4 DC Motor Pin: Pin 229
• Ground (GND): Pin 240
• Signal: Pin 215
• DC Motor Control: Pin 205

3) Component Location

Locate the throttle position sensor and its associated wiring on the machine for inspection and testing.

4) Requirements to Run Diagnostic

• Ensure the key is in the ON position, or the engine is running to activate the sensor for diagnostic checks.

5) Conditions for Setting the Error Code

• The error code is triggered when the TPS voltage drops below 400mV for a duration of 50 milliseconds.

6) Conditions for Clearing the Error Code

• The error code will clear automatically when the TPS voltage reads 400mV or higher for at least 50 milliseconds.

7) Checklist for Troubleshooting

• Verify sensor wiring connections.
• Check for loose or damaged pins at the connectors.
• Inspect the sensor’s signal voltage using a multimeter.
• If necessary, replace the throttle position sensor to restore proper voltage levels.