pr3 obd 0 ecu codes
Pull the passenger carpet back....turn the ignition on and watch for flashes. It will blink one time when you first turn the key on but dont count that unless it does it again a few seconds later. I have most of the codes 0-20 in sig other I can get you if needed.
code 21 VTEC Solenoid Valve. Disconnect the the connector and check for continuity between the grn/wht wire and ground. Should be 14-30 ohms if not need new solenoid. If ohms are within specs check for continuity between the solenoid plug and the ECU plug A8. Make sure theres no bad spots in the wire. If its good the ohms would be 0.00 if its open repair. Then check A8 to the chassis ground and should still be 14-30ohms if it is you have ECU problems. Try another ECU
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