Sonata Oxygen sensors

All 2003 Sonatas use four wire oxygen sensors. If someone is selling

2-wire sensors for a 2003 Sonata, you should take that as an indication that you should stay away.

Additionally, there was a change in ECM logic and oxygen sensor design for the V6 partway through the 2003 production run. Even if you purchased a four wire sensor, there?s no guarantee it?s correct for your car.

Furthermore, many Hyundai oxygen sensors have a bias voltage. I?ve heard of problems using aftermarket oxygen sensors.

"Virtual Cow" wrote: > Hi > Does anyone know how many wires there are in the O2 sensor on > a 2003 Sonata > ? > I see some on Ebay that are much cheaper than the dealer and > they have 2 > wire and 4 wire types. > Thanks > Jc

Thank you for your help it is very much appreciated.