Diagnostic Trouble Code (DTC) Information EPS-0071

Condition

Fig 1: Identifying Electric Power Steering Module (EPS)

Courtesy of VOLVO CARS OF NORTH AMERICA.

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.