Mack with Cummins shorted intermediate and output scr temp sensor. spn 5862, spn 4363
In this video i investigate scr temperature sensor codes on a Mack with a Cummins engine. I found damaged wiring at the module and replaced the module. I attribute my successes to god and give him the glory.

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Peterbilt with a Cummins, emissions derate due to a bad sensor. What to look for and how to fix.

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MULTIPLE ACTIVE fault codes REPAIRED! Derate aftertreatment fix - Cummins X15

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Cummins ISB Failed SCR

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Detroit DD13/15/16 - SCR NOx Conversion Eff. Low

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Faulty Crankshaft Position Sensor? – How to Test and fix!

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2019 International LT inlet Nox sensor spn 3216 fmi 10

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The Cummins ISX15 IMAP & BAP Sensors - Two Sensors That Can Cause Engine Derate & Cost You Thousands

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Cummins SCR Repair - NOX Efficiency

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Kenworth limp mode def level sensor failure

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DD15 fault code SPN 3246 FMI 0 DPF Outlet Temperature Very High

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Exhaust Gas Pressure

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Mack _ Cummins air compressor won’t build air pressure

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Clean Diesel EXPOSED: How DPF, EGR, and DEF Actually Work

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Cascadia DEF problems and a surprise compression issue at the end.

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SCR NOx Conversion Efficiency LOW fault code on semi trucks

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Something is jamming GPS over Europe. Here's what we found

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Inside the T-34-85

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