OBD Guide
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P10C7

Reductant Control System Signal Message Counter Incorrect

P10C7 is an OBD-II diagnostic trouble code meaning: Reductant Control System Signal Message Counter Incorrect. Common causes: problems with wiring between scr system modules, reagent system control module malfunction. Estimated repair cost: $56–278.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine light comes on
  • Reduced engine power
  • Possible AdBlue system error messages
  • Increased fuel consumption
  • The car may go into emergency mode

Causes

  • Problems with wiring between SCR system modules
  • Reagent system control module malfunction
  • Software errors in the ECU
  • Damage to SCR system sensors
  • Problems with the reagent dosing unit

How to Fix

  1. Diagnose the SCR system using a scanner
  2. Check the integrity of wiring and connections
  3. Update ECU software
  4. Check the operation of the SCR system sensors
  5. If necessary, replace the reagent system control module

Related codes

P10C6P10C8P20EE

FAQ

What does the P10C7 code mean?

P10C7 is an OBD-II diagnostic trouble code that indicates: Reductant Control System Signal Message Counter Incorrect

What causes a P10C7 error code?

The most common causes of P10C7 include: Problems with wiring between SCR system modules; Reagent system control module malfunction; Software errors in the ECU; Damage to SCR system sensors.

How do I fix a P10C7 diagnostic trouble code?

To fix P10C7: Diagnose the SCR system using a scanner. Check the integrity of wiring and connections. Update ECU software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P10C7?

Yes, but get it checked soon

How much does it cost to fix P10C7?

The estimated repair cost for P10C7 is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat