P04E3

Crankcase Ventilation Hose Connection Sensor Circuit High

Severity

⚠️ Medium

Can you drive?

Limited driving only, diagnose soon

Approx. repair cost

$56–167 (est.)

Symptoms

Increased oil consumption
Unstable engine idling
Deterioration of vehicle dynamics
Check Engine Light Illuminates

Causes

Sensor circuit open
Short circuit in the circuit
Hose connection sensor malfunction
Wiring harness damage
Problems with the engine control unit (ECU)

How to Fix

Check the integrity of the crankcase ventilation hose
Check sensor connections for oxidation or damage
Check the sensor circuit using a multimeter
Replace the sensor if it is faulty
Check and replace wiring harness if necessary

Related codes

P04E4 P04E5 P04E6