P0CE6: Hybrid/EV Battery Pack Coolant Control Valve Position Sensor Circuit Low
What to do
The valve may be working perfectly — this is the circuit that reports on it. But the car cannot tell the difference and will behave cautiously, which is the right response. As P0CDF, a valve fault often shows up somewhere unrelated, so mention anything else that has changed.
What this code means
The coolant control valve's position sensor is reading below its valid range. Why the valve is sensed as well as commanded is at P0CE4.
Likely causes
Start here
- Faulty battery pack coolant control valve · moderate
- Corroded or loose connector · easy
Less common
- Coolant leak into the sensor connector · moderate
- Failed sensor reference voltage supply · moderate
Symptoms
Components involved
Information, not instruction
CarGeek is a reference, not a service manual. Its pages are written from public sources and from what other people have found, never from a manufacturer's own service information, so they can be wrong or incomplete for your particular vehicle. Some of what they describe carries real risk: high voltage, fuel under pressure, stored energy, hot and moving parts.
Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
Be the first to write this up
Nothing posted about this yet. Whatever you found is worth writing down — even a dead end saves someone the same afternoon.
What makes one worth reading:
- The car — make, model, year and engine. The same fault behaves differently on each.
- What you measured, not only what you replaced.
- What actually fixed it — or that nothing did, which is worth knowing too.
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