The control module detected a fault associated with the Check Generator Belt circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
TuningBot DTC Database · v4.37.15
P1A77 Check Generator Belt
1 manufacturer-specific interpretation across 1 manufacturer in the TuningBot DTC database.
Hyundai
1 interpretationRelated and nearby codes
How to read P1A77
Powertrain: engine, transmission and driveline systems.
Manufacturer-defined range: the meaning can differ between brands.
Specific fault index within the subsystem.
Frequently asked questions about P1A77
What does P1A77 mean?
Check Generator Belt. The control module detected a fault associated with the Check Generator Belt circuit or function; the stored code identifies the affected component rather than a single failure mode. This is the manufacturer-specific definition used by Hyundai.
Is P1A77 generic or manufacturer-specific?
P1A77 is a manufacturer-specific code. In this database it is documented for: Hyundai. The same number can mean something different on other brands.
Can TuningBot remove P1A77 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
