The control module detected that the signal in the Diesel Intake Air Flow B Position circuit stayed above the expected operating range.
TuningBot DTC Database · v4.37.14
P2399 Diesel Intake Air Flow B Position Sensor Circuit High
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2399 means
Related and nearby codes
How to read P2399
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P2399
What does P2399 mean?
Diesel Intake Air Flow B Position Sensor Circuit High. The control module detected that the signal in the Diesel Intake Air Flow B Position circuit stayed above the expected operating range.
Is P2399 generic or manufacturer-specific?
P2399 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2399 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
Other file services
Understand the system behind this code: Diagnostic Strategy and DTC Logic
