P2228: Barometric Pressure Sensor A Circuit Low
Severity: medium
What it means: The engine computer sees a low signal from the barometric pressure sensor (or a related pressure sensor circuit). That reading helps the computer manage fueling and boost on many diesels.
Safe to drive? Yes for careful short trips if the truck still drives normally. If it is derated or smoking badly, no.
Common symptoms
- Check engine light
- Possible power loss or derate
- May appear with other sensor codes
Likely causes, ranked
- Faulty barometric / pressure sensorShop
- Wiring or connector corrosionDIY
- ECM software or related sensor faultsShop
Vehicle-specific notes
- 2014–2018 Ram 2500: A 2015 Ram 2500 Cummins owner logged P2228 among other pending codes the first night after purchase while chasing an intermittent check engine light. Read the full answer · Source
DIY or shop?
Basic wiring checks are DIY. Sensor diagnosis on a Cummins is usually a diesel shop job.
Vehicle-specific notes
- Ram 2500 (2014-2018): A 2015 Ram 2500 Cummins owner logged P2228 among other pending codes the first night after purchase while chasing an intermittent check engine light.