2012 Cascadia with 280K Multiple fault codes Please Advise

Thanks for contributing to climate change! my kids thank you!

 

Only high temperatures can kill 1-box. I have seen moved back DOC but never seen itself failed SCR.

 

I'm not sure if anyone answered these and if you still have this problem due to your "recent" service. (lol...)
Maybe this can help someone else out if they are following the post. Hopefully you have nice fairings below so when rolling up to scales they don't see a huge ATD missing...lol. Or you could always try and explain that you have a "glider" truck if anyone questions it. Haha...

Anyway, here's my advice:

SPN/FMI
4364/1--Aftertreatment 1 SCR Conversion Efficiency Data Valid But Below Normal Operational Range - Most Severe Level
4364/18--Aftertreatment SCR Catalyst Conversion Efficiency - Data Valid But Below Normal Operating Range - Moderately Severe Level
3364/2--Aftertreatment 1 Diesel Exhaust Fluid Tank 1 Quality Data Erratic, Intermittent Or Incorrect

In reality, you should get DLink and use the "Service Routines" tab and go to the "SCR and DPF voltages" template and monitor the NOx ppm signals. You need a conversion eff of about .80 at least (I think for EPA10). The ATS needs to be up to about 500F in order for the NOx sensors to activate and the ACM to care about the data.

As for the 4364/1,18 (the FMI 1 is the highest derate, hence the stop engine light):
You could have SCR poisoning causing your NOx eff to be low. BUT you could also have lazy NOx inlet/outlet sensors giving erroneous data. Usually with a plugged DPF will cause SCR poisoning. I would've contacted Schneider and get service records regarding if the DPF was serviced.

The 3364/2:
You have a DEF quality sensor in the tank built into the DEF header. This might need to be replaced.

I wouldn't be so quick to condemn the ATS at this point as it could be a combination of your NOx sensors and DEF quality sensor giving "poor performance" for NOx conversion.

 

there is no 'DEF quality sensor' on DEF header, on the entire system..

3364/2 troubleshooting
320.2  SPN 3364/FMI 2 - EPA10
Improper Diesel Exhaust Fluid Quality


SPN 3364/FMI 2
Description Improper Diesel Exhaust Fluid (DEF) Quality
Monitored Parameter DEF Quality
Typical Enabling Conditions DEF Refill event detected
Monitor Sequence None
Execution Frequency Continuous when enabling conditions met
Typical Duration 2 hours
Dash Lamps MIL, CEL
Engine Reaction 25% Derate
Verification Parked Regeneration
Check as follows:

1. 
   Show/Hide Checkboxes
2. Connect DiagnosticLink® .
3. Is the Aftertreatment Control Module (ACM) software level 8.6.104 with fuel map ZGS 002 or higher?
   1. Yes; Go to step 3.
   2. No; update device software, then Go to step 3.
4. Using the refractometer from DEF test kit W060589001900, measure DEF percentage. Is DEF percentage between 28 and 36%?
   1. Yes; Go to step 4.
   2. No; refer to appropriate manual for DEF tank cleaning/flushing procedure, then Go to step 12.
5. Turn ignition ON (key ON, engine OFF).
6. Compare DEF pressure to ambient air pressure (baro) and DEF air pressure. Is DEF pressure within 28 kPa (4.3 psi) of ambient air pressure (baro) and DEF air pressure?
   1. Yes; Go to step 6.
   2. No; replace the DEF pressure sensor. Refer to section "Removal of the Diesel Exhaust Fluid Pressure Sensor" . Go to step 6.
7. Visually check all DEF supply and air lines for physical damage (kinks, cracks, leaks, disconnects).
   1. If damage is found, repair as necessary; Go to step 12.
   2. If no damage is found, Go to step 7.
8. Remove DEF air pressure and temperature sensors.
9. Remove the DEF inlet delivery line and DEF air supply line from metering unit.
10. Remove DEF nozzle from the Aftertreatment Device (ATD) box.
11. Flush warm water into DEF air pressure and temperature sensor cavities in the DEF metering until water flows from the DEF inlet and DEF nozzle. Reinstall sensors and perform the DEF quantity test service routine. Is the dispensed DEF fluid level between 102 and 138mL (3.45 to 4.66 oz)?
    1. Yes; Go to step 12.
    2. No; repeat flushing procedure. Go to step 11.
12. Perform a DEF quantity test service routine and record the amount of DEF fluid level dispensed. Is the dispensed DEF fluid level between 102 and 138mL (3.45 to 4.66 oz)?
    1. Yes; Go to step 12.
    2. No; replace DEF Metering Unit. Refer to section "Removal of the Diesel Exhaust Fluid Metering Unit" . Go to step 12.
    
    ENGINE EXHAUST
    
    To avoid injury from inhaling engine exhaust, always operate the engine in a well-ventilated area. Engine exhaust is toxic.
    
    
    PERSONAL INJURY
    
    To avoid injury before starting and running the engine, ensure the vehicle is parked on a level surface, parking brake is set, and the wheels are blocked.
    
    
13. Clear fault codes, start engine and perform a parked regeneration to verify repairs

 

SPN 4364/FMI 1/18 - EPA10 derates 25% engine power only... you can drive the truck until you can fix it

 

Not true. Depending on his truck, he could have a DQS (DEF Quality Sensor). And those sensors are located in the DEF header. I think he said his truck was a 2012, so in that case, he could have the ANALOG header. DQS might be a requirement for GHG14.

And besides, quoting PSL does not prove anything regarding a truck having a DQS or not if it's a EPA10/GHG14 truck.

 

have you ever seen that DQS on truck?

 

Yup!
Go to your friendly local FTL dealer, go to the parts manager and search for a P/N 04-27881 for analog and a P/N 04-30240 for a DQS based header. Ask me how I know...