Sensor H is the eighth temperature sensor of a drive motor inverter, and P0E28 is its general circuit code for an electrical fault without a more precise low, high or erratic finding. No manufacturer documents P0E28 publicly. Mitsubishi, whose 2023 Outlander PHEV is the documented user of the H series, calls the part FMCU IGBT temperature sensor 8 (V-phase H2) and files its faults under P0E29, P0E2A and P0E2B; the general circuit code is not listed. Which component carries letter H is up to each maker. CARB requires hybrid input components to be checked for interruptions and for readings outside their range. When the value is missing, the controller has to protect that phase by limiting torque; the sensor is part of the inverter assembly.
High severity. Can I keep driving?If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
Symptoms
- Hybrid warning light and MIL on
- Limited motor torque
Most likely causes
- Sensor H or its sensing board in the inverter failed
- Connector or internal wiring fault in the inverter
- Evaluation input of the motor control unit faulty
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- It can trigger limp mode.
- It affects emissions.
What each character of P0E28 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- E: Subsystem depends on the code range
- 28: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0E28?
If the car still runs, drive as little as possible and go to a specialized repair shop. Do not touch the orange cables: they carry high voltage.
What causes code P0E28?
The most common causes are: sensor H or its sensing board in the inverter failed; connector or internal wiring fault in the inverter; evaluation input of the motor control unit faulty.
Related codes
- P0E29Drive Motor Inverter Temperature Sensor H Circuit Range/Performance
- P0E2ADrive Motor Inverter Temperature Sensor H Circuit Low
- P0E2BDrive Motor Inverter Temperature Sensor H Circuit High
- P0E2CDrive Motor Inverter Temperature Sensor H Circuit Intermittent/Erratic
- P0E23Drive Motor Inverter Temperature Sensor G Circuit
- P0BE0Drive Motor Inverter Temperature Sensor F Circuit
Sources
Values and procedures vary by manufacturer. If it affects brakes, steering, fuel or high voltage, see a professional. Updated: 2026-11-04. How we build these pages.