The control module detected that the Active Grille Air Shutter Module D temperature exceeded its permissible limit.
TuningBot DTC Database · v4.37.14
P2C78 Active Grille Air Shutter Module D Over Temperature
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2C78 means
Related and nearby codes
How to read P2C78
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 P2C78
What does P2C78 mean?
Active Grille Air Shutter Module D Over Temperature. The control module detected that the Active Grille Air Shutter Module D temperature exceeded its permissible limit.
Is P2C78 generic or manufacturer-specific?
P2C78 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2C78 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
