As the title says, My lc-1 keeps shooting to 5v all the way lean once over around 7k.

It reads fine at idle, cruise and part throttle, only happens when at WOT and higher rpm.

Sensor is only a couple of weeks old too.

Anyone had the same problem or have any ideas?

 

Have you calibrated your new sensor?

 

Most likely a leak in your exhaust just before where the sensor is placed...

 

When I first installed mine I had bogus readings from too much electrical noise. After moving the LC1 away from some wires it was fine.


Posted from Honda-tech.com App for Android

 

and/or your injectors are maxed out.
especially at high RPM, you could have poor grounding. clean all your ground connections, even if it doesn't solve the problem it's smart to do.

 

Is this on a stock engine or an engine with mods that require tuning? What have you done to the engine aside from adding a wideband sensor?