Question

2004 Chevrolet Optra 2.0L (Daewoo clone) with code P1673

Answer 1

P1673 = Engine Hot Lamp Control Circuit.

 

do all the lights on your instrument panel work during the bulb test. each bulb will light up for a few seconds when the ignition is turned to the run position. If the engine temperature light does not light up then do a voltage drop on the circuit. refer to your owners manual if you do not know what your engine temperature looks like. also go to auto zone and ask for a wiring diagram of the circuit.

Answer 2

P1673 CHEVROLET - EVAP Vent Solenoid Control Circuit Conditions

Read more: https://www.autocodes.com/p1673_chevrolet.html