I’ve had intermittent issues with my revup cam sensors, the ecu constantly throws codes and specifys bank 2 Sensor B.

I’ve replaced all 4 with hitachi oe. As a start, the previous ones appeared to be cheap ones..

swapping sensors around it’s always Sensor B bank 2.

I’ve removed all the harness loom all the way to the firewall and there appears to be nothing wrong with the wiring..

Could this be an issue with the ecu?

the car will randomly lose all power and die. But for the most part drives fine.

My thought is that it’s an electrical issue, but I don’t know where to start, I totally thought I’d find a melted wire behind the loom but it all looked good..

the engine harness is missing all its mounting brackets.

 

Multimeter time.
I have had a broken wire inside a connector.
You're doing everything right.

Also maybe connector contact is dirty...hopefully.

 

Solved issue, took all loom out didn’t find anything..

cleaned all the relays in ipdm, added a ground to plenum, disconnected the ecu and blew out the connector..

not sure which one solved it, but problem solved!