9/3/2021 Fault Code 5655: SCR System Test Failing NOx Sensors on Low Hour Aftertreatment Systems https://quickserve.cummins.com/qs3/pubsys2/xml/en/tsb/2021/tsb210183.html 2/ 2 Operate engine following conditions to clear the fault code.

Cummins fault code 5655 (Aftertreatment 1 SCR Conversion Efficiency) all quick serve troubleshooting procedures

Fault Code: 5655 NOx conversion across the SCR Possible reduced engine performance. PID (P), SID (S): catalyst is too low. aftertreatment intake NOx sensor and an aftertreatment outlet NOx sensor. By comparing these two values, the ECM. is able to determine the conversion efficiency of the SCR catalyst and dosing system.

Fault Code 5655: SCR System Test Failing NOx Sensors on Low Hour Aftertreatment Systems

Cummins ISB6.7 CM2350 (2013-17) Fault Code: 5655 PID: SPN: 4364 FMI: 31 Aftertreatment SCR Conversion Efficiency – Condition Exists. NOx conversion across the SCR catalyst is too low. Circuit Description

Cummins X12 CM2350 X119B (2018 & Newer) Fault Code: 5655 PID: SPN: 4364 FMI: 31 Aftertreatment 1 SCR Conversion Efficiency- condition Exists Circuit Description The engine control module (ECM) monitors the NOx concentration in the engine’s exhaust gases using an aftertreatment intake NOx sensor and an aftertreatment outlet NOx sensor.

On this fault code you will first need to make sure the def quality is good. Then make sure there are no ecm calibration revisions. Check for any leaks in the entire charge air and ex system. Check for any def leaks or def doser leaks. Check for any hardened def in the decomp tube.

Cummins X15 CM2450 X124B (2018 & Newer) Fault Code: 5655 PID: SPN: 4364 FMI: 31 Aftertreatment 1 SCR Conversion Efficiency- condition Exists Circuit Description The engine control module (ECM) monitors the NOx concentration in the engine’s exhaust gases using an aftertreatment intake NOx sensor and an aftertreatment outlet NOx sensor.

2023年5月22日 · When you see this code it means “This code sets when the Aftertreatment Control Module (ACM) detects that the Selective Catalyst Reduction (SCR) NOx Conversion efficiency is low.” We will get to how to fix it shortly. To learn more about this code and how to fix it, just continue to read our article.

2023年5月5日 · Sounds like you've been having some trouble with your Freightliner M2. You're definitely right to suspect a faulty outlet NOx sensor based on the fluctuations you're seeing during the SCR system test. It's always a good idea to check the sensors first when dealing with emissions-related issues.