RAM
09-017-25
Manufacturer communications
- Publication date
- 2025-07-11
- Received by NHTSA
- 2025-07-17
- NHTSA record numbers
- 11020753
Manufacturer summary
Original wording in English
Loose Charge Air Cooler Case Crimp Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must exhibit/set one or more of the following Diagnostic Trouble Codes (DTCs):
• P219C-00 - Cylinder 1 Air-fuel Ratio Imbalance.
• P219D-00 - Cylinder 2 Air-fuel Ratio Imbalance.
• P219F-00 - Cylinder 4 Air-fuel Ratio Imbalance.
• P21A0-00 - Cylinder 5 Air-fuel Ratio Imbalance.
• P21A1-00 - Cylinder 6 Air-fuel Ratio Imbalance. Customers may experience one or more of the following:
• Audible whistle type noise heard from the engine area.
• Reduced boost to performance This bulletin involves inspecting for a crimp in the Charge Air Cooler case and possibly replacing the Charge Air Cooler.
• P219C-00 - Cylinder 1 Air-fuel Ratio Imbalance.
• P219D-00 - Cylinder 2 Air-fuel Ratio Imbalance.
• P219F-00 - Cylinder 4 Air-fuel Ratio Imbalance.
• P21A0-00 - Cylinder 5 Air-fuel Ratio Imbalance.
• P21A1-00 - Cylinder 6 Air-fuel Ratio Imbalance. Customers may experience one or more of the following:
• Audible whistle type noise heard from the engine area.
• Reduced boost to performance This bulletin involves inspecting for a crimp in the Charge Air Cooler case and possibly replacing the Charge Air Cooler.
Reported code forms
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
Ram
P219C-00Cylinder 1 Air-fuel Ratio ImbalanceRam
P219D-00Cylinder 2 Air-fuel Ratio ImbalanceRam
P219F-00Cylinder 4 Air-fuel Ratio ImbalanceRam
P21A0-00Cylinder 5 Air-fuel Ratio ImbalanceRam
P21A1-00Cylinder 6 Air-fuel Ratio ImbalanceCheck 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 | 2025 |