Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P0055 means
P0055
Heated oxygen sensor (HO2S), bank 1, sensor 3 - heater resistance
Generic · emissions
Data confidence90%
The control module detected a fault associated with the Heated oxygen sensor (HO2S), bank 1, sensor 3 - heater resistance 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
HO2S
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.
0
Generic SAE-standard code: same meaning on every make.
055
Specific fault index within the subsystem.
Frequently asked questions about P0055
What does P0055 mean?
Heated oxygen sensor (HO2S), bank 1, sensor 3 - heater resistance. The control module detected a fault associated with the Heated oxygen sensor (HO2S), bank 1, sensor 3 - heater resistance circuit or function; the stored code identifies the affected component rather than a single failure mode.
Is P0055 generic or manufacturer-specific?
P0055 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0055 at file level?
If the fault logic lives in the ECU calibration, yes: our DTC Removal file service disables the specific fault entry and, where the ECU needs it, corrects the checksum too. Not sure whether your case qualifies? Request a free assessment and our engineers will check your ECU file.
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