P248D

Reductant Heater B Sense 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
Possible reduction in engine power
Deterioration of environmental indicators
SCR system error message on instrument panel
Increased AdBlue urea consumption

Causes

Open circuit in the heater sensor circuit
Short circuit to ground
Heater temperature sensor malfunction
Problems with wiring or connectors
Reagent heater module failure

How to Fix

Check the continuity of the heater sensor circuit
Inspect connectors and wiring for damage
Check the resistance of the heater sensor
If necessary, replace the sensor or heater module
Reset the error code and check for its reappearance

Related codes

P248C P248E P20EE