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P0398
Cylinder 1 Pressure Sensor Circuit High
Generic · engine
Data confidence
65%
The control module detected that the signal in the Cylinder 1 Pressure circuit stayed above the expected operating range.
TuningBot DTC Database · v4.37.15
P0398 Cylinder 1 Pressure Sensor Circuit High
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P0398 means
Related and nearby codes
How to read P0398
P
Powertrain: engine, transmission and driveline systems.
0
Generic SAE-standard code: same meaning on every make.
398
Specific fault index within the subsystem.
Frequently asked questions about P0398
What does P0398 mean?
Cylinder 1 Pressure Sensor Circuit High. The control module detected that the signal in the Cylinder 1 Pressure circuit stayed above the expected operating range.
Is P0398 generic or manufacturer-specific?
P0398 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P0398 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