Powertrain, generic

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

Check engine lightOn
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

P0EE6 is reported by the output stage itself: the switch that powers refrigerant valve B has measured too much current or got too hot and has protected itself. Modern smart high-side switches do this on chip; TI's TPS1HB16-Q1, for example, has an adjustable current limit between 4.4 and 49 A, shuts down at about 150 C junction temperature with roughly 20 C hysteresis, and flags the event on its diagnostic output. A coil drawing more current than normal, through shorted turns or a partial short in the wire, is the usual cause; a hot mounting spot of the module can add to it. No manufacturer documents P0EE6 publicly. Unlike P0EE4, the circuit still conducts and is not simply grounded. The same driver fault on valve A is P266F; Audi's A7 PHEV logs a valve B fault in J1024.

Likely causes

Shorted turns in the valve B coil raising the current
Partial short in the valve wiring
Control module output stage overheating

Symptoms

  • Warning lamp on
  • Valve B switched off, cooling branch not served

Repair estimate

DifficultyMediumWorkshop job
Parts and labour€80–900
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

ac refrigerant distribution valve bwiring harnessthermal management module

Related codes

P0EE3P0EE4P0EE5P266F

References: ti.com, law.cornell.edu, static.nhtsa.gov.