P24D2

Reductant Heater A Sense Circuit

Severity

⚠️ Medium

Can you drive?

Yes, but get it checked soon

Approx. repair cost

$17–89 (est.)

Symptoms

Check Engine light comes on
Possible reduction in engine power
Increased NOx emissions
SCR error message on dashboard

Causes

Open or short circuit in the heater circuit
Heating element malfunction
Relay or fuse problems
SCR control module malfunction
Poor contact in connectors

How to Fix

Check the integrity of the heater circuit
Check the resistance of the heating element
Inspect fuses and relays
Check connectors and wiring harness
Test the SCR control module

Related codes

P24D0 P24D1 P24D3