OBD Guide

P23C6

Engine Coolant Bypass Valve C Control Circuit Driver Current/Temperature Too High

P23C6 is an OBD-II diagnostic trouble code meaning: Engine Coolant Bypass Valve C Control Circuit Driver Current/Temperature Too High. Common causes: short circuit in valve control circuit, cooling bypass valve malfunction. Estimated repair cost: $17–89.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$17–89 (est.)

Symptoms

  • Engine overheating
  • Unstable engine operation
  • Increased fuel consumption
  • Reduced engine performance
  • Check Engine Light Is On

Causes

  • Short circuit in valve control circuit
  • Cooling bypass valve malfunction
  • Damage to wiring or connectors
  • Problems with the engine control module (ECU)
  • High resistance in control circuit

How to Fix

  1. Check wiring and connectors for damage
  2. Check the cooling bypass valve for a short circuit or open circuit.
  3. Measure resistance in valve control circuit
  4. Check the engine control module (ECU) for faults
  5. Replace faulty components

Related codes

Error P23C6 by Vehicle Brand

FAQ

What does the P23C6 code mean?

P23C6 is an OBD-II diagnostic trouble code that indicates: Engine Coolant Bypass Valve C Control Circuit Driver Current/Temperature Too High

What causes a P23C6 error code?

The most common causes of P23C6 include: Short circuit in valve control circuit; Cooling bypass valve malfunction; Damage to wiring or connectors; Problems with the engine control module (ECU).

How do I fix a P23C6 diagnostic trouble code?

To fix P23C6: Check wiring and connectors for damage. Check the cooling bypass valve for a short circuit or open circuit.. Measure resistance in valve control circuit. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P23C6?

Yes, but get it checked soon

How much does it cost to fix P23C6?

The estimated repair cost for P23C6 is $17–89. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat