The control module detected a fault associated with the Ignition Coil Primary Circuit Fuse B circuit or function; the stored code identifies the affected component rather than a single failure mode.
TuningBot DTC Database · v4.37.15
P2C31 Ignition Coil Primary Circuit Fuse B
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P2C31 means
Related and nearby codes
How to read P2C31
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 P2C31
What does P2C31 mean?
Ignition Coil Primary Circuit Fuse B. The control module detected a fault associated with the Ignition Coil Primary Circuit Fuse B circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P2C31 generic or manufacturer-specific?
P2C31 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2C31 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
