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P0397
Cylinder 1 Pressure Sensor Circuit Low
Generic · engine
Data confidence
65%
The control module detected that the signal in the Cylinder 1 Pressure circuit stayed below the expected operating range.
TuningBot DTC Database · v4.37.15
P0397 Cylinder 1 Pressure Sensor Circuit Low
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P0397 means
Related and nearby codes
How to read P0397
P
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
397
Specific fault index within the subsystem.
Frequently asked questions about P0397
What does P0397 mean?
Cylinder 1 Pressure Sensor Circuit Low. The control module detected that the signal in the Cylinder 1 Pressure circuit stayed below the expected operating range.
Is P0397 generic or manufacturer-specific?
P0397 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0397 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