P248C

Reductant Heater B Sense Circuit Low

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$39–167 (est.)

Symptoms

Check Engine light comes on
Reduced engine power
Increased fuel consumption
Possible SCR error messages
Increased NOx emissions

Causes

Open or short circuit in the heater circuit
Reagent heater sensor malfunction
Problems with the SCR control module
Poor contacts or corrosion in connectors
Malfunction of the heating element itself

How to Fix

Check the integrity of the heater circuit
Check the resistance of the heating element
Inspect connectors and wiring harness for damage
Check the voltage at the heater connectors
If necessary, replace the heating element or sensor

Related codes

P248B P248D P20EE