Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information EPS-0071

Condition

Location Of Components:

The electrical power steering module (EPS) monitors the power supply (30-supply) to the control module.
The diagnostic trouble code (DTC) is stored if the electrical power steering module (EPS) detects that the power supply (30-supply) to the control module is below 9V.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.

Note! For vehicles manufactured between w38 (2003) and w48 (2004), diagnostic trouble code (DTC) EPS-0071 is sometimes generated even though there is no fault in the power supply to the electrical power steering module (EPS). If there are no fault symptoms for this diagnostic trouble code (DTC), it is to be cleared immediately.

Substitute value
- No power steering effect.

Possible source
- Contact resistance or oxidation in the terminals
- Open-circuit in the power supply
- Short-circuit to ground in the power supply.

Fault symptom[s]
- No or weak power steering effect
- General warning lamp lit
- Messages in the display.