P2231O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1
Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P2231 means
P2231
O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1
Generic · emissions
Data confidence85%
The control module detected a fault associated with the O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 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 / Wiring
H025
ECM
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.
231
Specific fault index within the subsystem.
Frequently asked questions about P2231
What does P2231 mean?
O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1. The control module detected a fault associated with the O2 Sensor Signal Circuit Shorted to Heater Circuit Bank 1 Sensor 1 circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P2231 generic or manufacturer-specific?
P2231 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2231 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.
ItalianoIT
DeutschDE
EspañolES
PortuguêsPT
FrançaisFR
РусскийRU