OBD Guide

P205C

Reductant Tank Temperature Sensor A Circuit Low

P205C is an OBD-II diagnostic trouble code meaning: Reductant Tank Temperature Sensor A Circuit Low. Common causes: reagent temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $28–89.

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
  • Activation of emergency operation
  • SCR system fault message
  • Increased fuel consumption

Causes

  • Reagent temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the engine control unit
  • Crystallization of the reagent in the tank

How to Fix

  1. Check the condition of the temperature sensor and its connection
  2. Diagnose the sensor circuit for open and short circuit
  3. Clean sensor connector contacts
  4. If necessary, replace the temperature sensor
  5. Check the condition of the reagent in the tank

Related codes

Error P205C by Vehicle Brand

FAQ

What does the P205C code mean?

P205C is an OBD-II diagnostic trouble code that indicates: Reductant Tank Temperature Sensor A Circuit Low

What causes a P205C error code?

The most common causes of P205C include: Reagent temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the engine control unit.

How do I fix a P205C diagnostic trouble code?

To fix P205C: Check the condition of the temperature sensor and its connection. Diagnose the sensor circuit for open and short circuit. Clean sensor connector contacts. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P205C?

Yes, but get it checked soon

How much does it cost to fix P205C?

The estimated repair cost for P205C is $28–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat