OBD Guide

P263D

Reductant Heater Driver Performance

P263D is an OBD-II diagnostic trouble code meaning: Reductant Heater Driver Performance. Common causes: reagent heating element malfunction, open or short circuit in the heater circuit. Estimated repair cost: $56–167.

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

  1. Check heater circuit fuses and relays
  2. Diagnose the integrity of the heating element
  3. Check the condition of the wiring harness and connectors
  4. Test the heater control module
  5. Replace the faulty heating element if necessary

Related codes

Error P263D by Vehicle Brand

FAQ

What does the P263D code mean?

P263D is an OBD-II diagnostic trouble code that indicates: Reductant Heater Driver Performance

What causes a P263D error code?

The most common causes of P263D include: Reagent heating element malfunction; Open or short circuit in the heater circuit; Problems with the heater circuit relay or fuse; Heater control module malfunction.

How do I fix a P263D diagnostic trouble code?

To fix P263D: Check heater circuit fuses and relays. Diagnose the integrity of the heating element. Check the condition of the wiring harness and connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P263D?

Yes, but get it checked soon

How much does it cost to fix P263D?

The estimated repair cost for P263D is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat