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Home / DTC / P0EE6 — A/C Refrigerant Distribution Valve B Control Circuit Driver Current/Temperature Too High

P0EE6 — A/C Refrigerant Distribution Valve B Control Circuit Driver Current/Temperature Too High

Detailed page for trouble code P0EE6.

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Code

P0EE6

Generic P — Powertrain

A/C Refrigerant Distribution Valve B Control Circuit Driver Current/Temperature Too High

Brand: Generic
Type: P — Powertrain
Views: UK: 13 EN: 19 RU: 20
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Page language: EN

Causes

  • Short or partial short to ground in the valve power or control circuit
  • Internal short or seizure in the refrigerant distribution valve (solenoid)
  • High-resistance or corroded connector causing heat build-up
  • Faulty driver transistor or module inside the PCM/ECM
  • Incorrect wiring or aftermarket modifications
  • Intermittent wiring chafing causing momentary overcurrent events

Symptoms

  • A/C system not switching distribution paths correctly (reduced or no cooling in some modes)
  • Illuminated MIL/check engine lamp
  • Stored DTC P0EE6 with possible freeze-frame data
  • Intermittent A/C operation or loss of specific blower/temperature control
  • Burnt smell or heat at valve connector (in severe cases)

What to check

  • Retrieve freeze-frame and live data with a scan tool; note ambient and component temps and PID values
  • Inspect the valve connector and wiring for corrosion, damage, melting, or poor pins
  • Check for related DTCs (powertrain and body A/C control modules)
  • Measure battery voltage and grounds with the system operating
  • Perform resistance and continuity checks on valve coil and harness (with power disconnected)
  • Use a clamp meter or current probe to measure actual current draw on the valve feed while commanding the valve

Signal parameters

  • Normal control voltage: vehicle control signal (0–12 V, often PWM); should switch cleanly when commanded
  • Coil resistance (typical): commonly in the range of 5–50 ohms depending on design — compare to spec
  • Normal current draw: usually well below 5 A; fault logged when sustained current exceeds manufacturer threshold
  • Driver temperature: fault if driver or valve temp sensor (if present) reports overtemp or if driver reports overcurrent
  • Ground path: near-zero ohms between valve ground and chassis ground; high resistance indicates problem

Diagnostic algorithm

  1. Connect a professional scan tool. Confirm P0EE6 and record freeze-frame and any additional A/C-related codes.
  2. Visually inspect the A/C refrigerant distribution valve B, connector, and wiring harness for heat damage, corrosion, or chafing. Repair obvious damage.
  3. With ignition off, disconnect the valve connector and measure coil resistance across the valve terminals. Compare to vehicle/service spec. An open or very low resistance indicates a failed coil.
  4. Check continuity and resistance of the harness from the valve connector back to the PCM pin. Look for shorts to ground or battery and high-resistance joints.
  5. Reconnect and backprobe the valve connector. With A/C commanded ON, measure control voltage (or PWM) and current draw using a multimeter and/or clamp meter. Note if current is higher than spec or if driver is overheating.
  6. If current is excessive at the valve and wiring checks normal, replace the valve assembly and retest.
  7. If current is excessive and wiring shows short/low resistance, isolate and repair short (repair/replace damaged wiring, secure harness).
  8. If wiring and valve are good but driver still reports overcurrent, suspect PCM/ECM output driver failure—verify with manufacturer procedures before replacing module.
  9. After repairs, clear codes and perform functional tests and road test to ensure the fault does not return. Monitor for intermittent conditions.
  10. Document repairs and consult technical service bulletins for known issues or updated calibration/software if problem persists.

Likely causes

  • Failed/shorted A/C refrigerant distribution valve B (internal coil short or mechanical jam)
  • Damaged wiring harness at valve connector (pin corrosion, chafed insulation, exposed conductor)
  • Connector or pin corrosion causing elevated resistance and heating
  • PCM/ECM driver (output transistor) degraded or failed
  • High system voltage spikes or improper ground connection

Fault status

⚠️ Status
A/C refrigerant distribution valve B driver current or temperature exceeded allowable limits. PCM/ECM flagged overcurrent/overtemperature and may disable the valve output until fault cleared.
🟡 Repair difficulty: Medium
⏱️ Diagnostic time: 1.0-3.0 hours

Similar codes

P0EE5 P0EE4 P0EE7 P0455 P0627
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