RAM
09-003-26
Manufacturer communications
- Publication date
- 2026-02-24
- Received by NHTSA
- 2026-03-05
- NHTSA record numbers
- 11029754
Manufacturer summary
Original wording in English
Cummins 6.7L Air Filter Replacement DTC P0299 Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set the following Diagnostic Trouble Code (DTC):
• P0299-00 - Turbocharger Underboost. Customers may also comment on the following:
• Low power/acceleration or lag condition. This bulletin involves performing an Air Handling Performance Test (APT) and possibly replacing the air filter.
• P0299-00 - Turbocharger Underboost. Customers may also comment on the following:
• Low power/acceleration or lag condition. This bulletin involves performing an Air Handling Performance Test (APT) and possibly replacing the air filter.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
P0299-00Turbocharger UnderboostCheck vehicle applicability
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.