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| Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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08-19-2018, 06:02 PM
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#1 |
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CEL but no DTCs detected?
I'm seeing a permanent CEL on my dash, but upon doing a vehicle DTC scan via the EcuTek app, I don't see any codes displayed.
Oddly enough, performing the OBD readiness scan does show "1 emissions-related DTC" next to the CHECK ENGINE checkbox, but it doesn't provide me with any way to view it. Any ideas on why I can't see the code? I cleared all DTCs just to see if it would come back, and nothing showed up after a 10 min cruise around town. I did check the gas cap  Powertrain mods on my car (2017 BRZ): Delicious Stage 2 Tune JDL Catless UEL Headers Jackson Racing oil cooler |
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08-19-2018, 06:55 PM
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#2 |
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Tune related most likely.
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08-19-2018, 07:32 PM
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Quote:
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Get a different scan tool or go to autozone and borrow one. I have a feeling its p0420 and it might be a tune issue
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08-19-2018, 07:50 PM
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#4 | |
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08-19-2018, 07:54 PM
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#5 |
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Delicious probably forgot to turn off the emissions related codes in the tune.
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08-19-2018, 08:52 PM
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#6 |
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Are you flex fuel with pressure sensor? Could be fuel pressure related to the D box.
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08-20-2018, 02:06 AM
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#7 | |
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08-20-2018, 08:33 AM
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#8 |
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If it's EcuTek tuned then it could be that the CEL is set to come on for some reason when a Custom Map is triggered. That will not pop a code. EcuTek is normally very good for viewing DTCs.
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