C1109-00 code - no CEL tho

BossJ

Right - but I guess I'm wondering (and didn't ask this) - do codes get thrown and the CEL doesn't light up? Is that normal?

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2016 Pearl White 370Z Nismo (6ma) || Z1 CAI || Greddy GT X || FI Resonated Test Pipes || Ported Manifolds || Fuel Pump: aem50-1200 || 1050cc Fuel Injectors || E85 || RJM Performance Clutch || ECUTECH - SpecialtyZ (Seb)

SouthArk370Z

Yes. A lot of DTCs don't light up the CEL. Even if it is related to an engine problem. Depends on how severe the ECM thinks the problem is.

ABS is not part of the engine. You may have a brake or other problem light that you didn't notice.

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vtec to vvel

I probably have dirty MAFs as my car sometimes goes into limp mode when I first start her up with no cel light. Every few months, I will get the cel light and when I hook up my obd ii scanner, it gives me the MAF code, which I’ll clear out. So no, a cel light will not always come on.