P203D

Reductant Level Sensor A Circuit High

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$56–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased urea consumption
SCR System Error Message
Problems starting the engine (in some cases)

Causes

Malfunction of the urea level sensor
Open or short circuit in the sensor circuit
Connector problems or contact corrosion
SCR control module malfunction
Poor quality or frozen urea

How to Fix

Check the level and quality of urea in the tank
Diagnose the urea level sensor circuit
Check connectors and wiring condition
Test the urea level sensor
If necessary, replace the urea level sensor

Related codes

P203E P204D P204E