P263D

Reductant Heater Driver Performance

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 in fuel consumption
SCR system error message on instrument panel
Increased NOx emissions

Causes

Reagent heating element malfunction
Open or short circuit in the heater circuit
Problems with the heater circuit relay or fuse
Heater control module malfunction
Poor contact in heater circuit connectors

How to Fix

Check heater circuit fuses and relays
Diagnose the integrity of the heating element
Check the condition of the wiring harness and connectors
Test the heater control module
Replace the faulty heating element if necessary

Related codes

P263A P263B P263C