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P05C9
Economy Mode Switch Circuit Low
Generic · engine
Data confidence
65%
The control module detected that the signal in the Economy Mode Switch circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.15
P05C9 Economy Mode Switch Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P05C9 means
Related and nearby codes
How to read P05C9
P
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
5C9
Specific fault index within the subsystem.
Frequently asked questions about P05C9
What does P05C9 mean?
Economy Mode Switch Circuit Low. The control module detected that the signal in the Economy Mode Switch circuit stayed below the expected operating range.
Is P05C9 generic or manufacturer-specific?
P05C9 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P05C9 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