P0DA3Drive Motor B Inverter Voltage Sensor A Circuit
- Generic OBD-II code · Powertrain
- Turns on the check-engine light
- Matters for the ITP
- Can trigger limp mode
- Needs a drive cycle to confirm a fix
- How the car detects it
- 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.
- What you may notice
- Hybrid system warning and MIL
- Rear electric drive reduced or unavailable
- Reduced power or no READY state
- Likely causes
- PossibleVoltage sensing circuit inside the rear motor control unit defective
- PossibleLoose high-voltage cable or terminal at the rear inverter
- PossibleLow-voltage connector or harness to the inverter controller faulty
- RareHigh-voltage fuse loose or blown
- Inspection (ITP)
- Matters for the ITP. While the check-engine light is on, the car fails the emissions check.
- Repair
- Workshop only · Usually a job for a workshop.Typical cost: €100 – €4,000
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.