# Service bulletin TSB200102\-042720

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: 10175211
- Published by NHTSA: 2020\-05\-18
- Manufacturer's number: TSB200102\-042720
- Manufacturer's date: 2020\-04\-27
- NHTSA component: ELECTRICAL SYSTEM; ENGINE AND ENGINE COOLING:ENGINE:DIESEL

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of active Fault Code 1682 or 3574; DEF dosing unit not running when the DEF System Leak Test is run due to high resistance in the OEM harness causing voltage dropout.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175211-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10175211-9999.pdf)

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

## Components

Electrical system, Engine

## Vehicles listed

- CUMMINS ISB6.7
- CUMMINS L9
- CUMMINS X12
- CUMMINS X15

JSON: [/v1/bulletins/10175211](/v1/bulletins/10175211)

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