OBD Guide

P10C8

Reductant Temperature Signal Message Counter Incorrect

P10C8 is an OBD-II diagnostic trouble code meaning: Reductant Temperature Signal Message Counter Incorrect. Common causes: reagent temperature sensor malfunction, open or short circuit in the sensor circuit. Estimated repair cost: $33–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Possible SCR error messages on the instrument panel
  • Increased AdBlue consumption
  • Increased NOx emissions

Causes

  • Reagent temperature sensor malfunction
  • Open or short circuit in the sensor circuit
  • Poor contact in the sensor connector
  • Problems with the SCR control unit
  • Software error in SCR system

How to Fix

  1. Check the condition of the reagent temperature sensor
  2. Check the integrity of wiring and connectors
  3. Read sensor operating parameters using a diagnostic scanner
  4. If necessary, replace the temperature sensor
  5. Update SCR control unit software

Related codes

FAQ

What does the P10C8 code mean?

P10C8 is an OBD-II diagnostic trouble code that indicates: Reductant Temperature Signal Message Counter Incorrect

What causes a P10C8 error code?

The most common causes of P10C8 include: Reagent temperature sensor malfunction; Open or short circuit in the sensor circuit; Poor contact in the sensor connector; Problems with the SCR control unit.

How do I fix a P10C8 diagnostic trouble code?

To fix P10C8: Check the condition of the reagent temperature sensor. Check the integrity of wiring and connectors. Read sensor operating parameters using a diagnostic scanner. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P10C8?

Yes, but get it checked soon

How much does it cost to fix P10C8?

The estimated repair cost for P10C8 is $33–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat