Cylinder head temperature (CHT) sensor - fail safe cooling activated
Mazda · engine
Data confidence62%
The control module detected a fault associated with the Cylinder head temperature (CHT) sensor - fail safe cooling activated circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mazda.
Powertrain: engine, transmission and driveline systems.
1
Manufacturer-defined range: the meaning can differ between brands.
299
Specific fault index within the subsystem.
Frequently asked questions about P1299
What does P1299 mean?
Cylinder head temperature (CHT) sensor - fail safe cooling activated. The control module detected a fault associated with the Cylinder head temperature (CHT) sensor - fail safe cooling activated circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Mazda.
Is P1299 generic or manufacturer-specific?
P1299 is a manufacturer-specific code. In this database it is documented for: Mazda. The same number can mean something different on other brands.
Can TuningBot remove P1299 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.