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International Automotive Technicians Network
Re: Exhaust Fluid Quality Poor
Posted to Technical Discussion Forum on 1/11/2020

Highly doubt you have bad NOx. WOT throttle run to quick deceleration both NOx should hit below 10 PPM. Is the engine getting warm?

No Tech2Win. It will F you. ALER is very important. If your ALER is off no tests will pass.

RFQ test let sit a couple of min... Login to read more.