The control module detected an unstable or intermittent signal in the Crankcase Ventilation Hose Connection circuit.
TuningBot DTC Database · v4.37.15
P04E4 Crankcase Ventilation Hose Connection Sensor Circuit Intermittent/Erratic
Generic (OBD-II) interpretation in the TuningBot DTC database.
What P04E4 means
Related and nearby codes
How to read P04E4
Powertrain: engine, transmission and driveline systems.
Generic SAE-standard code: same meaning on every make.
Specific fault index within the subsystem.
Frequently asked questions about P04E4
What does P04E4 mean?
Crankcase Ventilation Hose Connection Sensor Circuit Intermittent/Erratic. The control module detected an unstable or intermittent signal in the Crankcase Ventilation Hose Connection circuit.
Is P04E4 generic or manufacturer-specific?
P04E4 is a generic OBD-II code: it has the same meaning on every make and model that follows the SAE standard.
Can TuningBot remove P04E4 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
