Powertrain, generic

P0E94 Drive Motor B Inverter Voltage Sensor B Circuit High

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P0E94 records that voltage sensor B in the drive motor B inverter reports a value at the top of its signal range. A short from the signal to a supply, an interrupted sensor ground or a defective measuring stage are the usual explanations; a genuine overvoltage would normally show on the other channels too. No manufacturer documents P0E94 publicly. For sensor A of the rear motor Mitsubishi publishes the high limit on the 2023 Outlander PHEV: P0DA6 needs a signal of at least 4.76 V lasting 0.3 s, and only while the propulsion system is active, so the check is not run in standby. The low side of sensor B on motor B is P0E93, the high side of sensor B on motor A is P0E8F. CARB requires out-of-range checks for such inputs. Expect the second motor to be taken offline and a warning with MIL.

Likely causes

Measuring stage for channel B in the motor B inverter defective
Signal shorted to a supply or lost sensor ground
Real overvoltage on the high-voltage bus

Symptoms

  • MIL and EV system warning
  • Second drive motor deactivated, less traction and power

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€100–4,000
Time0.5–6 h

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

Parts involved

drive motor b inverter voltage sensor bwiring harnesshybrid control module

Related codes

P0E93P0E91P0E92P0DA6P0E8F

References: mitsubishitechinfo.com, law.cornell.edu.