# Service bulletin 21\-048\-15 REV\-A

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: 10151739
- Published by NHTSA: 2018\-12\-17
- Manufacturer's number: 21\-048\-15 REV\-A
- Manufacturer's date: 2015\-10\-08
- NHTSA component: POWER TRAIN:TRANSFER CASE \(4\-WHEEL DRIVE\); POWER TRAIN

## NHTSA's summary

Flash: Drivetrain Control Module C2020\-01 ECU Internal Fault setting in the DTCM This bulletin involves reprogramming the Drivetrain Control Module \(DTCM\) with the latest available software. Some vehicles may experience the All Wheel Drive Light \(AWD\) illuminating due to DTC C2020\-01 ECU Internal Fault setting erroneously in the DTCM.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10151739-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10151739-0001.pdf)

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

## Components

Transmission and driveline, Transfer case

## Trouble codes named

C2020

## Vehicles listed

- 2016 FIAT 500
- 2015 JEEP RENEGADE

JSON: [/v1/bulletins/10151739](/v1/bulletins/10151739)

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