Powertrain, generic · Hybrid propulsion

P0DA3 Drive Motor B Inverter Voltage Sensor A Circuit

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

The inverter of drive motor B, usually the rear electric motor in all-wheel-drive hybrids, measures its own DC link voltage; sensor A delivers that value to the motor controller. P0DA3 is the general circuit fault for this channel, with no finer verdict such as low or high. No manufacturer documents P0DA3 publicly. Mitsubishi watches the same sensor in the rear motor unit of the Outlander PHEV but reports it with the specific codes P0DA5 and P0DA6, whose diagnosis starts with the high-voltage fuse, cabling and battery terminals before the motor control unit is replaced. Denso describes in patent US9819293B2 how the input voltage reading of an inverter is judged against a battery reading or an estimate from the control loop. Without a valid voltage the rear drive is usually limited or switched off. Specific faults are P0DA4 to P0DA7.

Likely causes

Voltage sensing circuit inside the rear motor control unit defective
Loose high-voltage cable or terminal at the rear inverter
Low-voltage connector or harness to the inverter controller faulty
High-voltage fuse loose or blown

Symptoms

  • Hybrid system warning and MIL
  • Rear electric drive reduced or unavailable
  • Reduced power or no READY state

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 awiring harnesshybrid control module

Related codes

P0DA4P0DA5P0DA6P0DA7P0D2DP0C7A

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