OBD Guide

P2AD0

Reductant Temperature Sensor B Circuit Intermittent

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Check Engine Light Is On
  • Possible reduction in engine power
  • Increased NOx emissions
  • Incorrect operation of the SCR system
  • Error message in the AdBlue system

Causes

  • Reagent temperature sensor B fault
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Wiring harness damage
  • Reagent level low or freezing

How to Fix

  1. Check the level and condition of the reagent (AdBlue)
  2. Inspect the temperature sensor connector and wiring
  3. Check resistance and sensor signal
  4. Replace temperature sensor if necessary
  5. Reset the error code and check the system

Related codes

Error P2AD0 by Vehicle Brand