b1 swapped integra 0bd-0 pr4 and im pulling a cel 13 swapped ecu's and still pulling code 13. any idea's?

 

the sensors located near the ecu, see if its unplugged or dirty.

google should be your best friend, if you would have searched you would have found some answers.

this displays where it is..

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/91-dx-obd0-code-13-a-2790542/

i,ve read that this happens sometimes on zc swaps and when they use the zc ecu it throws the code but when they throw in the pm6 ecu it goes away, so try putting in a pm6 if the first thing dont work

 

also your crx may not have one, its hard to get to also. and if your crx doesn't have one the parts $150 for the sensor.

my suggestion is try the pm6 ecu, thats what i have my ls crx running with