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P28B2
Cylinder 9 Ion Current Sense Circuit Low
Generic · engine
Data confidence
65%
The control module detected that the signal in the Cylinder 9 Ion Current Sense circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.15
P28B2 Cylinder 9 Ion Current Sense Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P28B2 means
Related and nearby codes
How to read P28B2
P
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
8B2
Specific fault index within the subsystem.
Frequently asked questions about P28B2
What does P28B2 mean?
Cylinder 9 Ion Current Sense Circuit Low. The control module detected that the signal in the Cylinder 9 Ion Current Sense circuit stayed below the expected operating range.
Is P28B2 generic or manufacturer-specific?
P28B2 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P28B2 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