OBD Guide

P205D

Reductant Tank Temperature Sensor A Circuit High

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

Symptoms

  • Check Engine Light Is On
  • Reduced engine power
  • Possible SCR system error messages
  • Increased urea consumption
  • Increased NOx emissions

Causes

  • Reagent temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in sensor connectors
  • Problems with the SCR control unit
  • Sensor is dirty or damaged

How to Fix

  1. Check the condition of the sensor and its connector
  2. Check the sensor circuit for open and short circuit
  3. Check reference voltage and sensor signal
  4. If necessary, replace the temperature sensor
  5. Reset the error and check the system operation

Related codes

Error P205D by Vehicle Brand