The P1603 error and plashing P for park are indicating your relearn failed. "If DTCs P0730, P0731, P0741, and P0867 do not come back, upgrade the TCM S/W and perform TCM adaptive values learning procedure. If successful, complete the service. If not, and TCM Learning fails, ‘P’ will be blinking on instrument cluster and DTC code P160300 will set. Then replace the IVT/CVT and do TCM Learning again."
