Diagnostic Trouble Code (DTC) Information EPS-E000: Notes

Condition

Fig 1: Identifying Electric Power Steering Module (EPS)

Courtesy of VOLVO CARS OF NORTH AMERICA.

The control modules transmit and receive information via a standardized serial communication method - CAN (Control Area Network). The diagnostic trouble code (DTC) is stored if the control module registers serious interference on the high speed network (CAN communication blocked).

NOTE:

In the event of system communication problems, it is not possible to communicate with the control module. Therefore it will only be possible to read off the diagnostic trouble code (DTC) if the fault is intermittent.

Substitute Value

The electrical power steering module (EPS) shuts itself off ("bus-off")
The pump motor is permitted to run at a constant speed.

HINT: The electrical power steering module (EPS) will remain shut off until the power supply is broken (15, 30, X). When the power supply is connected the control module will make a new attempt to communicate.

Possible Source

Short-circuit between the control area network (CAN) wiring
Open-circuit in the control area network (CAN) wiring
Internal fault in the electrical power steering module (EPS)
Internal fault in another control module in the same part of the control area network (CAN).

Fault symptom[s]

Abnormally light steering at high speed
Abnormally heavy steering at low speed
General warning lamp lit
Messages in the display.