P266F code meaning
A/C Refrigerant Distribution Valve A Control Circuit Driver Current/Temperature Too High
What P266F means
Refrigerant distribution valve A is a solenoid that opens or closes one branch of the A/C circuit, for instance a rear evaporator or a battery chiller. Its driver stage in the control module protects itself: when the output current rises above its limit or the chip overheats, it switches off and reports P266F. That usually means the load draws too much, through a shorted coil, a short in the harness or a valve that is mechanically stuck. No manufacturer documents P266F publicly; Ford lists only the open-circuit code P2611 for the same valve, and suppliers such as Egelhof build these shut-off valves as simple on/off solenoids. Unlike P2611 to P2613, which flag open and shorted wiring, P266F concerns the protection of the driver itself. The affected branch then stays closed.
P266F at a glance
- Check engine lightUsually not
- Emissions testNot an emissions code
- Limp modeNot expected
- Repair difficultyMedium
- Typical labor0.5 to 3 hours
- Clears after repairWhen cleared with a scanner
Symptoms of P266F
- One A/C zone or the battery cooling stays inactive
- Fault may return after cooling down
Common causes of P266F
- Most likelyValve coil with shorted turns drawing excessive current
- PossibleShort in the valve harness or connector
- Less likelyValve mechanically stuck so the coil stays loaded
- Less likelyOverheated or defective driver stage in the control module
Check the most likely causes first. Replacing parts by guesswork is the most expensive way to clear a code.
Parts involved
Ac distribution valve aControl module
What each part of P266F means
| P | Powertrain system: engine, fuel system, ignition, emissions and transmission. |
| 2 | Generic code (second SAE range): it means the same on every make. |
| 6 | Area: computer (engine control module) and output circuits. |
| 6F | The exact fault in that area. |
What to do next
- Note P266F and any other codes stored with it: several codes together often point to one cause.
- Check for loose connectors and damaged wiring around the parts the code names.
- Check open recalls for your car: some faults are fixed for free by the dealer. Enter your VIN.
- Clear the code only after the repair. If it comes back, the fault is still there.
Buying a used car? Scan it for stored codes before you pay. A recently cleared memory can hide a problem.
Questions about P266F
What does P266F mean?
P266F means "A/C Refrigerant Distribution Valve A Control Circuit Driver Current/Temperature Too High". Refrigerant distribution valve A is a solenoid that opens or closes one branch of the A/C circuit, for instance a rear evaporator or a battery chiller. It is a generic code, so it means the same on every make.
Is it safe to drive with P266F?
P266F does not normally turn on the check engine light by itself. Watch for the symptoms above and have it checked soon.
Will P266F fail an emissions test?
P266F is not an emissions code, so on its own it usually does not fail an emissions test. Other stored codes or a lit check engine light still can.
How hard is P266F to fix?
Difficulty: medium. A typical repair takes 0.5 to 3 hours of work. This is a job for a workshop.
Will P266F clear itself after the repair?
Clear the code with a scanner after the repair. If the fault is fixed, it does not come back.