What it means
The A/C refrigerant distribution valve B reports a control circuit high condition. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
A/C refrigerant distribution valve B controls refrigerant flow through part of the air-conditioning system. The control module monitors its electrical control circuit and sets this code when the signal is higher than expected, which can result from a short to battery voltage, an open coil, or a poor connection.
Common causes
Most likely first.
- Wire shorted to B+
- Coil open
- Connector pins corroded - high contact resistance
Symptoms
- A/C warning light or check-engine light
- Air conditioning may cool poorly or intermittently
How to diagnose it
- Scan for related A/C codes and save freeze-frame data, noting whether valve B was commanded when P0EE6 set.
- Inspect valve B’s connector and wiring for damage, moisture, corrosion, loose terminals, or contact with a power feed.
- Check live valve-command data, if available, and gently move the valve B harness to see whether the circuit reading changes.
- Use the wiring diagram to test the valve B control wire for a short to battery voltage and check for an open or high-resistance connection.
- Test valve B’s coil and circuit against the manufacturer’s specification to distinguish an open coil from a harness fault.
Common fixes
- Repair wiring shorted to battery voltage or an open in valve B’s control circuit.
- Clean or repair corroded, loose, or pushed-back connector terminals at valve B.
- Replace valve B if its coil is open or fails the manufacturer’s electrical checks.
- Clear the code and verify commanded valve operation and A/C cooling.
Can I keep driving?
Driving is generally possible if the vehicle has no other warnings or operating problems, but A/C may cool poorly or intermittently. Do not rely on the A/C for defogging until it has been checked.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.