P24D3

Reductant Heater B Sense Circuit

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
Deterioration of exhaust characteristics
Possible SCR error messages
Increased fuel consumption

Causes

Open or short circuit in the heater circuit
Heater temperature sensor malfunction
Wiring harness damage
Problems with the SCR control unit
Failure of the heating element itself

How to Fix

Check the integrity of the heater circuit
Test the heater temperature sensor
Inspect the wiring harness for damage
Check the resistance of the heating element
Scan the SCR control unit for additional errors

Related codes

P24D0 P24D1 P24D2