OBD-II DTC · SAE J2012
P0039
Turbo/Super Charger Bypass Valve Control Circuit Range/Performance
What P0039 means
P0039 is a standard SAE J2012 powertrain diagnostic trouble code with the defined meaning: Turbo/Super Charger Bypass Valve Control Circuit Range/Performance. This is the OEM-agnostic definition; specific manufacturer interpretation may add detail (subsystem, bank, sensor location) but the core meaning is consistent across all OBD-II compliant vehicles since 1996.
Can this code be suppressed via ECU tuning?
Generally NOT recommended to suppress without fixing the underlying issue. Boost-related DTCs often indicate genuine turbo or wastegate problems that warrant inspection.