vtec spool error
Posted: Sat Nov 13, 2021 4:13 pm
i have a 93 del sol with a b16a swap, p28ecu with hondata s300 v1. drivng my car i get no cel but definitely something going on with vtec. when i test output for vtec it gives me spool error code 21. i have replaced the solenoid and wiring harness and still same issue. it never throws a code while driving, never has. only when i test ouput it gives error code. can anyone point me in the right direction? thanks