EPS (MDPS=Motor Driving Power Steering) controls EPS solenoid current accurately according to vehicle speed. EPS ECU monitors that operating voltage supplied as IG S/W is too high or too low on "power supply terminal". If excessive high voltage or low voltage is detected, EPS ECU stops current supply to solenoid to prevent unexpected operation or damage.

EPS (MDPS=Motor Driving Power Steering)ECU sets this code if ASP(Absolute Steering Position) zero setting is not done when EPS ECU losses steering angle signal due to EPS alinment replace etc. EPS ECU stops "damper" and "return" control due to loss of steering angle signal.