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Question # 25

Diesel sets fault for “NOx Conversion Low.” DEF consumption normal. Upstream NOx sensor shows high, downstream only slightly lower. What is MOST likely?

Options:

A.

Faulty SCR catalyst

B.

DEF injector clogged

C.

Faulty EGR valve

D.

Leaking charge air cooler

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T Series Overview

Name Automotive Service Excellence: Medium-Heavy Truck series
Code T Series
Vendor Skilled Trades
Certification ASE

T Series Questions