What does it mean?
P04E1 is a Emission Control System fault code. It indicates: Crankcase Ventilation Hose Connection Sensor Circuit.
Crankcase Ventilation Hose Connection Sensor Circuit
Severity
Low
Can I keep driving?
Usually drivable; have it fixed at the first opportunity.
How is this code read?
This is a standard OBD-II code; any basic scanner reads it on vehicles built after 2004.
- PPowertrain
- 0Generic code
- 4Emissions
- E1Sequence number
Codes From the Same System
All Fault Codes- P0400Exhaust Gas Recirculation Flow Malfunction
- P0401Exhaust Gas Recirculation Flow Insufficient Detected
- P0402Exhaust Gas Recirculation Flow Excessive Detected
- P0403Exhaust Gas Recirculation Circuit Malfunction
- P0404Exhaust Gas Recirculation Circuit Range/Performance
- P0405Exhaust Gas Recirculation Sensor A Circuit Low
- P0406Exhaust Gas Recirculation Sensor A Circuit High
- P0407Exhaust Gas Recirculation Sensor B Circuit Low
Related Similar Codes
- P04E0EVAP System Purge Control Valve A Stuck Closed
- P04E2Crankcase Ventilation Hose Connection Sensor Circuit Low
- P04E3Crankcase Ventilation Hose Connection Sensor Circuit High
- P04E4Crankcase Ventilation Hose Connection Sensor Circuit Intermittent/Erratic
- P04E5EGR Temperature Sensor D Circuit
- P04E6EGR Temperature Sensor D Circuit Range/Performance
- P04E7EGR Temperature Sensor D Circuit Low
- P04E8EGR Temperature Sensor D Circuit High
This information follows the generic OBD-II definition and does not replace a vehicle-specific diagnosis. The severity rating is rule-based; an authorised diagnostic reading is required for a definitive answer.