# P0299 on the 2018 Jeep Grand Cherokee

The bulletins listed name this code in NHTSA's summary, or are about the same components. A bulletin or a recall listed here may apply to the model year. None of it is a diagnosis.

Nobody has written a description of this code yet.

## Bulletins for this model year that name P0299

- [10229751](https://open.wenmarpro.com/bulletins/10229751), 2023-01-17: Perceived Low Power/Acceleration Lag, And/Or Malfunction Indicator Lamp \(MIL\) Illumination, Diagnostic Trouble Codes \(DTCs\) P0299 Turbocharger Underboost And/Or P026D ? Fuel Injection Quantity Higher Than Expected, Set.
- [10221886](https://open.wenmarpro.com/bulletins/10221886), 2022-09-26: 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0133\-00 \- O2 Sensor 1/1 Slow Response. P20EE\-00 \- SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E\-00 \- Cold Start Engine Exhaust Temperature Too Low. P0299 \- Turbocharger Underboost Condition. The following software enhancement is available:Calibration to correct the On\-Board Diagnostic \(OBD\) system?s inability to detect and set DTCP0420 \- Catalyst Efficiency \(Bank 1\)when the Diesel Oxidation Catalyst \(DOC\) is missing.
- [10180276](https://open.wenmarpro.com/bulletins/10180276), 2020-09-28: 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 one or more of the following Diagnostic Trouble Codes \(DTCs\) have been set:P0133\-00 \- O2 Sensor 1/1 Slow Response. P20EE\-00 \- SCR NOX Catalyst Efficiency Below Threshold Bank 1. P050E\-00 \- Cold Start Engine Exhaust Temperature Too Low. P0299 \- Turbocharger Underboost Condition. The following software enhancement is available:Calibration to correct the On\-Board Diagnostic \(OBD\) system?s inability to detect and set DTCP0420 \- Catalyst Efficiency \(Bank 1\)when the Diesel Oxidation Catalyst \(DOC\) is missing.