# Service bulletin TSB210013\-020520

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: 10188846
- Published by NHTSA: 2021\-03\-15
- Manufacturer's number: TSB210013\-020520
- Manufacturer's date: 2021\-02\-05
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

This Technical Service Bulletin describes the verification and resolution of miswiring of the diesel exhaust fluid pump wiring harness. Harness is mis\-wired such that the DEF pump return input at the controller is receiving continuous 24 VDC from an erroneous wire. This is an update to a previously submitted communication.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188846-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2021/MC-10188846-9999.pdf)

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

## Components

Engine

## Vehicles listed

- CUMMINS CUMMINS

JSON: [/v1/bulletins/10188846](/v1/bulletins/10188846)

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