# Service bulletin 18\-020\-15

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: 10144832
- Published by NHTSA: 2018\-09\-24
- Manufacturer's number: 18\-020\-15
- Manufacturer's date: 2015\-03\-10
- NHTSA component: ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\)

## NHTSA's summary

Flash: MIL Illumination P1D73, P1CEA And/Or P0456 Includes Various Driveability Enhancements This bulletin involves selectively erasing and reprogramming the Powertrain Control Module \(PCM\) with new software. A small number of customers may experience a Malfunction Indicator Lamp \(MIL\) illumination. Upon further investigation the Technician may find that the following Diagnostic Trouble Codes have been set: ? P1D73\-00\-AGS Performance ? P1CEA\- Boost Side Evap Purge System Performance ? P0456\- Evap System Small Leak Customers may also experience any of the following symptoms: ? Spark knock when using low octane fuel in the vehicle. ? Black smoke from tail pipe on initial start up during cold ambient temperatures. ? Uneven acceleration feeling under moderate to heavy throttle input ? Bump or surge noticed prior to engine reaching normal operating temperature ? Rough idle during A/C engagement/disengagement ? During periods of extended idle or short hot soak events and ambient temperatures below 15°F\(\-9°C\), engine idle speed may increase to 1800 RPM if coolant temperature drops below 158°F\(70°C\). Condition is only present when the transmission is in Park. ? Low speed engine response improvements in city and traffic driving conditions Updating the PCM software will correct the condition listed above.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2015/MC-10144832-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2015/MC-10144832-0001.pdf)

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

## Components

Electrical system, Transmission and driveline, Automatic transmission, Software, Transmission control module

## Trouble codes named

P0456, P1CEA, P1D73

## Vehicles listed

- 2012 DODGE DART

JSON: [/v1/bulletins/10144832](/v1/bulletins/10144832)

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