Check engine light on along with D4 flasing

Question

Hi, I have honda accord 2002 and from yesterday i am having problem. First my tcs and check engine light came together then tcs went off however the check engine stayed on and in addition D4 is also flashing.

I scan and receive the codes p0700, p0706, p0780

What is the reason behind that. Looking for suggestion

Thank you

Answer 1

P0700 Transmission fault detected

P0706 Open in transmission range circuit

P0780 Mechanical problem in hydraulic control system for shift solenoid A and  A/T clutch pressure control solenoid A and B

A open circuit for the transmission range circuit will cause the D light to flash, what P0706 and P0708 have in common is the same ground point, on the transmission range switch check the ground circuit