What it means
The ECM detects a circuit high fault on the drive motor inverter temperature sensor e circuit. Reading cannot be used reliably for control.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Inverter temperature sensor E reports temperature at its monitored point in the drive motor inverter to the ECM. P0BDE sets when the E signal circuit voltage is above its acceptable range, which can result from a signal short to battery voltage or an open sensor circuit; the ECM cannot use the reading reliably.
Common causes
Most likely first.
- Signal wire shorted to B+
- Open sensor
- Connector pins corroded - high contact resistance
Symptoms
- EV/hybrid system warning light on
- Reduced motor power or torque
- Possible limp mode or vehicle shutdown
How to diagnose it
- Review freeze-frame and hybrid control data to see when sensor E went high and whether other inverter temperatures appear normal.
- With the vehicle powered down as directed by the manufacturer, inspect sensor E's connector and wiring for an open, corrosion, or insulation damage near power-feed wiring.
- Test the E signal for a short to B+ and check circuit continuity and connector contact condition using the manufacturer's procedure.
- Compare sensor E live data with other inverter temperature readings; a fixed extreme value can point to an open or short rather than real heat.
- If the harness passes, test sensor E against the manufacturer's specification before investigating the control module.
Common fixes
- Reseat sensor E's connector and clean or repair corroded terminals.
- Repair an open in the E signal circuit or connector.
- Repair damaged insulation that lets the E signal contact B+.
- Replace sensor E if it fails the manufacturer's test.
Can I keep driving?
Reduced motor power, limp mode, or shutdown may occur because the ECM cannot monitor temperature E reliably. Limit driving to reaching a safe location, avoid heavy loads, and stop if a hybrid warning or power loss appears.
A code shows where the control module detected a fault, not always which part failed. Check the causes in order and confirm with a test before replacing parts. Have several codes? Check them together
This is a generic code: it means the same on every make. The car’s maker may add more detail in its own service information.