josh7owens

I keep throwing this "secondary o2 sensor high voltage code", who makes the OEM o2 sensors and what should I buy as a replacement. I'm not sure I want to may $230 each for 2 sensors.


Thanks

CoolGuy094

Well the secondary sensor is the one that comes after the cat right? So you are having issues with the one after the cat. Is this the same code that test thrown when you run a test pipe? Dont you have a high flow cat? Have you checked the connector to make sure its not gunked up? Its kinda a PITA to get to.

josh7owens

No it's the high voltage code which is what you get when the sensor goes bad. From what I've been told

mmm...vtec

Have u compared the voltages of both sensors?

Billman250

I've always been leary of replacing the factory FRONT 02 sensor with anything other than oem.

But for the REAR (secondary) all it does is monitor CAT activity. So I'd be confident buying a cheap sensor and soldering it in. I'm sure you can just call any auto parts store with your year car and they can give you alternative options to OEM.