i have a 91 civic with a d16a6 block with d15 DPFI fuel injection, i have a new IAT sensor, and O2 sensor. Check engine comes on a little while after driving and then goes away when i turn off and on the car. My ECU is blinking 4 Different codes... 13, 1, 4, and 10. doesnt make sense to me...can it be wiring? or ECU? or something else.. please help.

 

what ecu are u running dp or mp? and what harness? did it just start out of no where, or was recent work done?

 

ecu is a pm5 with a stock civic dx harness, the only thing i did recently was install new blower motor for heater and i double check all the plugs i disconnected. and everything looks good.

 

yes it is a dp harness and yea started out of nowhere