P2248O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P2248 means
P2248
O2 Sensor Reference Voltage Performance Bank 2 Sensor 1
Generic · emissions
Data confidence85%
The control module detected a fault associated with the O2 Sensor Reference Voltage Performance Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Symptoms
MIL illuminated
Possible increased fuel consumption
Possible unstable idle
Possible causes
Wiring
H025
Recommended checks
Read live sensor voltage/current and heater status
Inspect wiring and connectors
Check for exhaust leaks near the sensor
Check fuel trim values for upstream mixture faults
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
248
Specific fault index within the subsystem.
Frequently asked questions about P2248
What does P2248 mean?
O2 Sensor Reference Voltage Performance Bank 2 Sensor 1. The control module detected a fault associated with the O2 Sensor Reference Voltage Performance Bank 2 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P2248 generic or manufacturer-specific?
P2248 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2248 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.
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