P204E

Reductant Pressure Sensor Circuit Intermittent/Erratic

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine Light Is On
Reduced engine power
Increased fuel consumption
Increased NOx emissions
Possible SCR error messages

Causes

Reductant pressure sensor malfunction
Open or short circuit in the sensor circuit
Poor contact in the sensor connector
Contamination of the sensor or injection system
Problems with the SCR control unit

How to Fix

Check the level and quality of the reductant
Inspect the connectors and wiring of the sensor
Check sensor resistance and reference voltage
Clean the sensor and its contacts
If necessary, replace the pressure sensor

Related codes

P204F P2050 P20EE