ItalianoIT
DeutschDE
EspañolES
PortuguêsPT
FrançaisFR
РусскийRU
P2CF2
Auxiliary Thermostat B Stuck Closed
Generic · thermal management
Data confidence
65%
The control module determined that the Auxiliary Thermostat B did not change state as commanded and appears stuck.
TuningBot DTC Database · v4.40.3
P2CF2 Auxiliary Thermostat B Stuck Closed
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2CF2 means
Related and nearby codes
How to read P2CF2
P
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
CF2
Specific fault index within the subsystem.
Frequently asked questions about P2CF2
What does P2CF2 mean?
Auxiliary Thermostat B Stuck Closed. The control module determined that the Auxiliary Thermostat B did not change state as commanded and appears stuck.
Is P2CF2 generic or manufacturer-specific?
P2CF2 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2CF2 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