Systen for error detection of hybrid vehicle and method thereof

The present invention is a fault diagnosis apparatus and method of a hybrid vehicle for sensing a failure occurring in the power module, the motor control main components of a hybrid vehicle is disclosed. The present invention is based on the "0" with respect to the first course, each sangbyeol current in a first step the root-mean-square value is calculated for calculating the effective value is measured for each phase current of the sine wave output from the power module (+) region and (-), separated by a region (+) region and (-), divided areas the effective value calculated at the second step, a second step for calculating the respective effective value with the effective value calculated in the first process of extracting a result one to the estimation result of the third step, a third step of estimating that the asymmetric state on the basis of "0" is estimated to be asymmetric state, if continued more than failure determination reference time outputs a failure flag, and then stop the operation of the power module a fourth process of.