DId they install the correct O2 sensors ?
I have replaced both of mine in my 05 and never the light come on. I used ones from Carquest auto parts.
225,000miles 5/2012 ej257 short block, 8/2011 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
Engine Build - Click Here