Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - CEL and Traction Control light

Jedistylez · 03-19-2023, 05:10 PM

So I recently just installed an aftermarket over pipe and UEL headers and didn’t have any issues at first, however after about a day or two the CEL and TCS light came on and I am unable to turn off the TCS light. I also installed a CAI but put the stock intake back thinking it might have been that. My LTFT percentage is way too high at 37% when idle but goes down to normal percentage range when driving. Could this be from an exhaust leak/vacuum leak? It’s a 2017 auto.

03-19-2023, 05:10 PM	#1
Jedistylez Junior Member Join Date: Mar 2023 Drives: 2017 Subaru BRZ Limited Location: California, USA Posts: 2 Thanks: 0 Thanked 0 Times in 0 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	CEL and Traction Control light - P0171 So I recently just installed an aftermarket over pipe and UEL headers and didn’t have any issues at first, however after about a day or two the CEL and TCS light came on and I am unable to turn off the TCS light. I also installed a CAI but put the stock intake back thinking it might have been that. My LTFT percentage is way too high at 37% when idle but goes down to normal percentage range when driving. Could this be from an exhaust leak/vacuum leak? It’s a 2017 auto.