J240sx

Okay so here are the Facts: I have a 92 EG B20V w/ a P72 running Hondata S200. I recently had to pull my tranny due to my clutch, long story short...Put it all back together now its throwing a Code 0. Its not the ECU as i have tried a diff. ECU and it threw a Code 6 and also tried my ECU in another car it ran fine. My car does start, it does run, runs Fine but C.E.L is on and it doesn't engage into Vtec. When I jump the Harness to test for codes, the Light goes off and stays off. I have check my grounds, I've check to make sure none of my pins on the harness to ECU came out, check my Battery fuse and other fuses and still can't get the damn light to go out. Input is appreciated.

thegoldenchild

code 0 is ecu

J240sx

I know that, but it the Car starts and runs, The ECU works in another car, so obviously not the ECU

thegoldenchild

code 6 is engine coolant temperature. if that sensor is not working properly then vtec will not activate. make sure u have continuitivity on that sensor. plug d pin 13 red/white , yet again code 0 is ecu

J240sx

Coolant temp is working fine, switched coolant temp switches from one car to another . Donor car was not throwing CEL for coolant temp.

Thatguysstuff

Sounds like Wiring problems then... Uncut harness?

HonkeyDong

check your grounds

J240sx

everything is fixed now. Everything was getting ground and getting signal to harness, There was contact with the coolant temp sensor and Vtec Pressure switch, thus causing interference with VTEC signal and Code 0 on ECU.