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P28C1
Ion Sense Module Supply Voltage Low
Generic · battery
Data confidence
65%
The control module detected that the Ion Sense Module Supply voltage stayed below the expected range.
TuningBot DTC Database · v4.37.15
P28C1 Ion Sense Module Supply Voltage Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P28C1 means
Related and nearby codes
How to read P28C1
P
Powertrain: engine, transmission and driveline systems.
2
Generic SAE-standard code: same meaning on every make.
8C1
Specific fault index within the subsystem.
Frequently asked questions about P28C1
What does P28C1 mean?
Ion Sense Module Supply Voltage Low. The control module detected that the Ion Sense Module Supply voltage stayed below the expected range.
Is P28C1 generic or manufacturer-specific?
P28C1 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P28C1 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