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TuningBot DTC Database · v4.37.15

P25B8 Auxiliary Ignition Switch On/Start Position Circuit Low

Generic (OBD-II) interpretation in the TuningBot DTC database.

P · PowertrainBatteryOBD2

What P25B8 means

P25B8
Auxiliary Ignition Switch On/Start Position Circuit Low Generic · battery Data confidence 65%

The control module detected that the signal in the Auxiliary Ignition Switch On/Start Position circuit stayed below the expected operating range.

Related and nearby codes

How to read P25B8

P

Powertrain: engine, transmission and driveline systems.

2

Generic SAE-standard code: same meaning on every make.

5B8

Specific fault index within the subsystem.

Frequently asked questions about P25B8

What does P25B8 mean?

Auxiliary Ignition Switch On/Start Position Circuit Low. The control module detected that the signal in the Auxiliary Ignition Switch On/Start Position circuit stayed below the expected operating range.

Is P25B8 generic or manufacturer-specific?

P25B8 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.

Can TuningBot remove P25B8 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

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