Powertrain, generic (extended)

P2E1A Drive Motor A Inverter Voltage Sensor A/B Correlation

Check engine lightOn
EmissionsRelevant
Drive cycleRequired
Limp modePossible

P2E1A sets when the two DC voltage readings inside the drive motor A inverter, sensor A and sensor B, stop agreeing although they should describe the same high-voltage potential. Each value may pass its own range test; the fault lies in the mismatch. No manufacturer documents P2E1A publicly. Mitsubishi shows such a cross-check on the 2023 Outlander PHEV, where sensor A reads capacitor 1 and sensor B the main channel of capacitor 2: a gap of at least 50 V lasting 0.2 s is booked under the single-sensor codes P0D2E or P0E8D. Ford's 2019 hybrids file a gap above 60 V between the inverter input and output sensors under P0DA8. Two channels alone cannot show which one is wrong, so Mitsubishi adds the rear motor voltage as a third reference. Expect a warning and limited electric drive.

Likely causes

One of the two voltage measuring channels in the inverter has drifted
Fault in the inverter or power drive unit electronics
Poor high-voltage connection between the two measuring points
Control software with an unsuitable comparison window

Symptoms

  • Hybrid system or drive warning lamp, MIL possible
  • Reduced or no electric drive power
  • Further inverter voltage codes stored at the same time

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€150–5,000
Time1–6 h

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

Parts involved

drive motor a inverter voltage sensor adrive motor a inverter voltage sensor bhybrid control module

Related codes

P0D2EP0E8DP0D2DP0E8CP0DA8

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