The control module detected a fault associated with the Cylinder 10 Air - Fuel Ratio Imbalance - Adjustment At Limit During Balance circuit or function; the stored code identifies the affected component rather than a single failure mode.
TuningBot DTC Database · v4.37.15
P231D Cylinder 10 Air - Fuel Ratio Imbalance - Adjustment At Limit During Balance
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P231D means
Related and nearby codes
How to read P231D
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 P231D
What does P231D mean?
Cylinder 10 Air - Fuel Ratio Imbalance - Adjustment At Limit During Balance. The control module detected a fault associated with the Cylinder 10 Air - Fuel Ratio Imbalance - Adjustment At Limit During Balance circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P231D generic or manufacturer-specific?
P231D is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P231D 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
