The control module determined that the Exhaust Aftertreatment Power Relay Control did not change state as commanded and appears stuck.
TuningBot DTC Database · v4.37.15
P05F6 Exhaust Aftertreatment Power Relay Control Circuit Stuck On
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P05F6 means
Related and nearby codes
How to read P05F6
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 P05F6
What does P05F6 mean?
Exhaust Aftertreatment Power Relay Control Circuit Stuck On. The control module determined that the Exhaust Aftertreatment Power Relay Control did not change state as commanded and appears stuck.
Is P05F6 generic or manufacturer-specific?
P05F6 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P05F6 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
