What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
P300CA9Hot film mass air flow sensor malfunctionP300CA81) Check for Required ECU Software Update (Applies toP300CA9Hot film mass air flow sensor malfunctionP300CA9• Computational model for programmed values of air intake, in particular, for the high load mode, calculates this high load correction programmed value incorrectlyView all · Manufacturer wording →
Manufacturer communications
6Original wording in English
FREIGHTLINER, MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Complaint Check engine warning light is active. The following fault codes may be present in the engine control unit: • P3007F1 Leak detected in the intake air system or • P3007F2 Mass air flow malfunction in the intake…
FREIGHTLINER, MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Check engine light active - Fault P3007F1, P3007F2, P300CA8, or P300CA9 present in CDI control unit Complaint Check engine warning light active. The following fault codes may be present in the engine control unit: •…
FREIGHTLINER, MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Check engine light active Complaint Check engine warning light active. The following fault codes may be present in the engine control unit: • P3007F1 Leak detected in intake air system or • P3007F2 Mass air flow…
MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Check engine light active - Fault P3007F1, P3007F2, P300CA8, or P300CA9 present in CDI control unit: Check engine warning light active. The following fault codes may be present in the engine control unit: • P3007F1 Leak…
FREIGHTLINER, MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Complaint Check engine warning light active. Fault code P300CA8 or P300CA9 "Hot film mass air flow sensor malfunction" present in engine control unit. Cause These faults can be set if: 1. A leakage upstream of the…
MERCEDES-BENZ
Reported code forms P300CA8 P300CA9
Complaint Check engine warning light active. Fault code P300CA8 or P300CA9 "Hot film mass air flow sensor malfunction" is present in engine control unit. Cause a) In the case of fault P300CA8: • Due to incorrectly…
Check vehicle applicability
48A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Freightliner | SPRINTER (VS30) | 2020 |
| Freightliner | SPRINTER (VS30) | 2019 |
| Freightliner | SPRINTER 1500 | 2024 |
| Freightliner | SPRINTER 1500 | 2023 |
| Freightliner | SPRINTER 1500 | 2022 |
| Freightliner | SPRINTER 1500 | 2021 |
| Freightliner | SPRINTER 2500 | 2024 |
| Freightliner | SPRINTER 2500 | 2023 |
| Freightliner | SPRINTER 2500 | 2022 |
| Freightliner | SPRINTER 2500 | 2021 |
| Freightliner | SPRINTER 3500 | 2024 |
| Freightliner | SPRINTER 3500 | 2023 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.