# Service bulletin TSB170045\-091220

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: 10118589
- Published by NHTSA: 2017\-10\-12
- Manufacturer's number: TSB170045\-091220
- Manufacturer's date: 2017\-09\-13
- NHTSA component: ENGINE AND ENGINE COOLING:EXHAUST SYSTEM:EMISSION CONTROL:CRANKCASE \(PCV\); ENGINE AND ENGINE COOLING

## NHTSA's summary

This Technical Service Bulletin describres the verification and resolution of repeat occurances of high crankcase pressure Fault Code 555 or 556 immediately after engine start up at ambient temperatures below freezing. Coating crankcase pressure sensor with CRC 3\-36 or WD\-40 prevents water or debris accumulation in crankcase pressure sensor port that may freeze when temperatures drop below freezing. This is a revision to a previous communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2017/MC-10118589-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2017/MC-10118589-0001.pdf)

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

## Components

Engine, Exhaust and emissions, Crankcase ventilation \(PCV\)

## Vehicles listed

- CUMMINS ISX
- CUMMINS ISX15
- CUMMINS X15

JSON: [/v1/bulletins/10118589](/v1/bulletins/10118589)

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