TSB 18-066-23

[rynosback]

Just a heads up, this TSB covers a bunch of adjustments that trigger the check engine light. It solved my check engine light, code P20EE. Had the def pump replaced this summer and they did not do this update.

https://static.nhtsa.gov/odi/tsbs/2023/MC-10239975-9999.pdf

 

[Cummins12V98]

Did they do the Cummins Emissions update?

 

[Ozymandias]

The following improvements are also included in this update:
• **Transmission overheat protection (DG7 Only).**
• Adaptive Cruise improvements at high altitude.
• Ambient Air Pressure displayed correctly in wiTECH.
• Oil pressure switch modification.
• Cold Start improvements.
• Oil change monitor improvement for severe duty operation.
• Engine Warm up Protection Improvement to help promote better oil delivery to engine bearings during cold starts.
• Transmission Overall Shift Schedule Improvements.
• wiTECH “Fuel Injector Cutoff Test” fix. • wiTECH Mass Air Flow (MAF) Sensor data display additional fix.
• Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM “Misc Functions”.
• Hydrocarbon Desorption (HCD) Mode operational improvement. HCD mode resumes after key cycle.
• Enabling message in dash alerting operator when in “Exhaust Brake - Cab Warm Up” mode.
• System Improvement for “Exhaust Brake - Cab Warm Up” mode.
• Transmission upshift quality enhancements (68RFE Only).
• wiTECH “Fuel Pressure Override” test improvement.
• wiTECH Mass Air Flow (MAF) data parameter improvement (displaying raw value instead of estimated).
• wiTECH fuel system run-up test improvement.
• wiTECH fan actuation test improvement.
• Smart Exhaust Brake operation improvement.
• Engine warm up protection system improvement. Max engine speed limit change from 1,200 RPM to 1,000 RPM during initial startup in extreme cold ambient temperatures.
• Improved shift quality and engine performance when in 4LO.
• Idle Shutdown Timer System improvement.


Not to bad

 

[rynosback]

The following improvements are also included in this update:
• **Transmission overheat protection (DG7 Only).**
• Adaptive Cruise improvements at high altitude.
• Ambient Air Pressure displayed correctly in wiTECH.
• Oil pressure switch modification.
• Cold Start improvements.
• Oil change monitor improvement for severe duty operation.
• Engine Warm up Protection Improvement to help promote better oil delivery to engine bearings during cold starts.
• Transmission Overall Shift Schedule Improvements.
• wiTECH “Fuel Injector Cutoff Test” fix. • wiTECH Mass Air Flow (MAF) Sensor data display additional fix.
• Enabling wiTECH Particulate Matter (PM) Sensor Regeneration Test in PCM “Misc Functions”.
• Hydrocarbon Desorption (HCD) Mode operational improvement. HCD mode resumes after key cycle.
• Enabling message in dash alerting operator when in “Exhaust Brake - Cab Warm Up” mode.
• System Improvement for “Exhaust Brake - Cab Warm Up” mode.
• Transmission upshift quality enhancements (68RFE Only).
• wiTECH “Fuel Pressure Override” test improvement.
• wiTECH Mass Air Flow (MAF) data parameter improvement (displaying raw value instead of estimated).
• wiTECH fuel system run-up test improvement.
• wiTECH fan actuation test improvement.
• Smart Exhaust Brake operation improvement.
• Engine warm up protection system improvement. Max engine speed limit change from 1,200 RPM to 1,000 RPM during initial startup in extreme cold ambient temperatures.
• Improved shift quality and engine performance when in 4LO.
• Idle Shutdown Timer System improvement.


Not to bad

It is a list, that’s why I included the link so people could read about it.

 

[rynosback]

Did they do the Cummins Emissions update?

I would assume so, as they put my vin in and check for current things. My studs and tailgate recall was done at the dealer that replaced the DEF pump.

 

[Ozymandias]

It is a list, that’s why I included the link so people could read about it.

There are many that don't click on Links.

 

[Signal73]

Just a heads up, this TSB covers a bunch of adjustments that trigger the check engine light. It solved my check engine light, code P20EE. Had the def pump replaced this summer and they did not do this update.

https://static.nhtsa.gov/odi/tsbs/2023/MC-10239975-9999.pdf

What year is your truck? Your sig says you have a 2015 and you posted in the 2010-2018 forum, yet that TSB you linked is for 2019 trucks.

 

[rynosback]

There are many that don't click on Links.

But you can see it goes to NHTSA.GOV. But I get it.

 

[rynosback]

What year is your truck? Your sig says you have a 2015 and you posted in the 2010-2018 forum, yet that TSB you linked is for 2019 trucks.

It is a 15 as my signature states. I see why you say that, but when I called to ask about open recalls. This is where I was directed and they had my vin.

 

[AH64ID]

What year is your truck? Your sig says you have a 2015 and you posted in the 2010-2018 forum, yet that TSB you linked is for 2019 trucks.

Correct, nothing about this TSB applies to a 2015 truck. It’s for 2019 ETM and ETL engines. The 2015 has an ETK.

There also isn’t a software crossover from 13-18 and 19+trucks. The TSB calls out ACC, which wasn’t even an option until 2019. The supplemental cab heater also wasn’t around until 2019.

@rynosback If that’s truly the TSB listed on the invoice I’d be asking the dealer some questions. I’d also ask if the 67A recall was applied, assume nothing.

 

[Duane58]

Did anyone with a 19' get the TSB 18-066-23 done and feel the truck lost a little power?