The control module detected that the signal in the Refueling Vapor Control Valve circuit stayed above the expected operating range.
TuningBot DTC Database · v4.37.15
P04B2 Refueling Vapor Control Valve Circuit High
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P04B2 means
Related and nearby codes
How to read P04B2
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 P04B2
What does P04B2 mean?
Refueling Vapor Control Valve Circuit High. The control module detected that the signal in the Refueling Vapor Control Valve circuit stayed above the expected operating range.
Is P04B2 generic or manufacturer-specific?
P04B2 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P04B2 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry. Checksum correction is not included: it is a separate, optional service. 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
