|
Issues | Warranty | Recalls / TSB Problems, issues, recalls, TSBs |
|
Thread Tools | Search this Thread |
03-19-2023, 04:10 PM | #1 |
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.
|
03-20-2023, 03:14 PM | #2 |
Senior Member
Join Date: Jun 2012
Drives: '13 BRZ TLM Spec
Location: Florida
Posts: 1,963
Thanks: 1,612
Thanked 2,336 Times in 1,002 Posts
Mentioned: 115 Post(s)
Tagged: 0 Thread(s)
|
Are you absolutely sure there are no exhaust leaks from the header or overpipe install? Or the intake fiddling? If not, was the car tuned for the headers & overpipe?
__________________
2013 BRZ Premium 6MT - Track Car, 2020 GMC Canyon Denali Duramax - Tow Vehicle, 2021 Forester Sport - Wife's Daily, 2016 Crosstrek - Daughter's Ride and always buying random flips...
|
03-20-2023, 04:53 PM | #3 |
Senior Member
Join Date: Jan 2017
Drives: brz 2017 hksv2
Location: italy
Posts: 2,202
Thanks: 502
Thanked 1,069 Times in 777 Posts
Mentioned: 65 Post(s)
Tagged: 0 Thread(s)
|
high probability of exhaust leak near the front o2 sensor
stock tune with stock airbox won t give +35% or more of ltft just for exhaust header unless the front lambda is measuring some fresh air |
03-20-2023, 07:29 PM | #4 |
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)
|
I’m sure I tightened everything well but there might be an exhaust leak. I’ll have to check it out to be sure but I used an OFT2 stage 2 plus tune for the headers. It’s only high when idling but when driving the percentages are normal.
|
|
|
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Check Engine light and Traction Control Light | JeRM | Issues | Warranty | Recalls / TSB | 25 | 06-02-2023 09:00 PM |
ABS and Traction control light | DSW | Issues | Warranty | Recalls / TSB | 3 | 03-12-2023 10:38 AM |
Traction Control & ABS light on | darkofrs | Issues | Warranty | Recalls / TSB | 7 | 04-02-2022 12:06 PM |
No traction control/ABS light on | Hollwood_lives | CANADA | 6 | 01-13-2016 09:11 PM |
Engine Check light, Traction Control light, cruise control light all on suddenly | wqc3241 | Software Tuning | 2 | 01-10-2016 07:37 AM |