# Service bulletin TechTalk566600K

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

- Type: Service bulletin
- NHTSA id: 10191690
- Published by NHTSA: 2021\-05\-05
- Manufacturer's number: TechTalk566600K
- Manufacturer's date: 2021\-04\-29
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Tech Talk discussion on SPN 91 FMI 8, SPN 111 FMI 3, RAC System Failure HSA and Check Engine \(amber\) ON.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191690-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10191690-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- 2016 FREIGHTLINER CASCADIA

## Recalls for the same vehicles and component

- [2015484](/recalls/tc/2015484.md), 2015-10-16: Engine
- [15V620000](/recalls/nhtsa/15V620000.md), 2015-10-02: ELECTRICAL SYSTEM:IGNITION:MODULE; ENGINE AND ENGINE COOLING:ENGINE

## Other bulletins for the same vehicles and component

- [FleetCom\_SS 3163\-FTL](/bulletins/11026453.md), 2025-12-06, Other: ENGINE. Fleet Communications for Power Steering Reservoir Fill Cap Venting
- [CXA 3\_25\_NOx](/bulletins/11016309.md), 2025-04-02, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 2\_25\_Turbo Oil Drain](/bulletins/11014819.md), 2025-03-04, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 2\_25\_NOx](/bulletins/11014818.md), 2025-03-04, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_Turbo Oil Drain](/bulletins/11013206.md), 2025-01-29, Other: ENGINE. CX Advocate for turbo oil drain cracking
- [CXA 1\_16\_NOx](/bulletins/11013204.md), 2025-01-29, Other: ENGINE. CX Advocate for NOx conversion low faults
- [CXA 1\_16\_GATS2.4](/bulletins/11013201.md), 2025-01-29, Other: ENGINE. CX Advocate for GATS2.4 being expanding to DD15
- [CXA 1\_16\_DD13 Altitude](/bulletins/11013199.md), 2025-01-29, Other: ENGINE. CX Advocate for DD13 Gen 5 engines operating at high altitude experience EGR slow response fault.
- [CXA 1\_16\_CARB Truck Chec](/bulletins/11013196.md), 2025-01-29, Other: ENGINE. CX Advocate for CARB tightening the Readiness Criteria applied to On\-Board Diagnostic \(OBD\) test submissions for the Clean Truck Check.
- [D24R2\-OWN LTR](/bulletins/11012368.md), 2025-01-06, Emissions: ENGINE. Emission Recall for DETROIT DD13 and DD16 ACM Software Reprogramming

JSON: [/v1/bulletins/10191690](/v1/bulletins/10191690)

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