RAM
18-062-20 REV. A
Manufacturer communications
- Publication date
- 2020-12-16
- Received by NHTSA
- 2021-03-01
- NHTSA record numbers
- 10187710
Manufacturer summary
Original wording in English
Flash: Powertrain Control Module (PCM) Updates This bulletin involves reprogramming the PCM with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that the one or more of the following DTCs have been set:P0300 - Multiple Cylinder Misfire. P0301 - Cylinder 1 Misfire. P0302 - Cylinder 2 Misfire. P0303 - Cylinder 3 Misfire. P0304 - Cylinder 4 Misfire. P0305 - Cylinder 5 Misfire. P0306 - Cylinder 6 Misfire. P0307 - Cylinder 7 Misfire. P0308 - Cylinder 8 Misfire. The customer may experience one or more of the following:Rough idle/misfire only after cold start ECO light does not illuminate in the cluster when Multiple Displacement System (MDS) is active(EMEA, LATAM and APAC). 2-3 kph (1.3-1.9 mph) difference between cruise set speed and the actual vehicle speed(EMEA, LATAM and APAC).
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
P0300Multiple Cylinder MisfireRam
P0301Cylinder 1 MisfireRam
P0302Cylinder 2 MisfireRam
P0303Cylinder 3 MisfireRam
P0304Cylinder 4 MisfireRam
P0305Cylinder 5 MisfireRam
P0306Cylinder 6 MisfireRam
P0307Cylinder 7 MisfireRam
P0308Cylinder 8 MisfireCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Ram | 1500 | 2020 |