How do i pull the trouble codes on the b18 swap i just did. i went from obd0 to obd 1. now i dont know how to check the trouble codes, there is no flashing light now. could anybody help me. its a 91 civic hb dx. thanks

 

threre is a jump connector on the passenger side under the glove box either blue or light grey. jump it w/ a paper clip. count the number of blinks on your check engine light indicator.
1 long blink = 10
fast blinks = 1

for example:
1 long blink and 4 fast blink = code 14