P2628Heated oxygen sensor (HO2S) 1, bank 1, pumping current trim - circuit high
Generic (OBD-II) interpretation in the TuningBot DTC database.
P · PowertrainEmissionsOBD2
What P2628 means
P2628
Heated oxygen sensor (HO2S) 1, bank 1, pumping current trim - circuit high
Generic · emissions
Data confidence85%
The control module detected that the signal in the Heated oxygen sensor (HO2S) 1, bank 1, pumping current trim circuit stayed above the expected operating range.
Symptoms
MIL illuminated
Possible increased fuel consumption
Possible unstable idle
Possible causes
Wiring short to positive
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.
628
Specific fault index within the subsystem.
Frequently asked questions about P2628
What does P2628 mean?
Heated oxygen sensor (HO2S) 1, bank 1, pumping current trim - circuit high. The control module detected that the signal in the Heated oxygen sensor (HO2S) 1, bank 1, pumping current trim circuit stayed above the expected operating range.
Is P2628 generic or manufacturer-specific?
P2628 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P2628 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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