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.

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