What it means
The current sensor for drive motor A phase X reports a circuit high fault. Phase current measurement is unreliable.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Drive motor A's phase X current sensor reports current in that motor phase to the control module. P2E1E sets when the phase X circuit signal is higher than the module expects, so its current measurement cannot be trusted.
Common causes
Most likely first.
- Current sensor failed
- Wiring fault
- 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
- Use a scan tool to capture freeze-frame data and note whether the high phase X signal is present at key-on or only while the motor operates.
- Compare live phase X sensor data with phases Y and Z under matching conditions to confirm whether the high reading is isolated.
- With the vehicle safely disabled according to its service instructions, inspect the phase X connector and harness for pin damage, corrosion, moisture, or a signal wire shorted to power.
- Test the phase X circuit for shorts to power, wiring damage, and poor connector contact using the manufacturer's procedure.
- If wiring and connections are sound, test the phase X sensor against the manufacturer's specification before considering a module fault.
Common fixes
- Repair a phase X signal wire shorted to power or damaged harness section.
- Clean, reseat, or repair the phase X connector if its pins are contaminated, loose, or corroded.
- Replace the phase X current sensor if it continues to produce a high signal with a verified circuit.
- Repair or replace the control module only if testing confirms an internal module fault.
Can I keep driving?
Avoid high-load driving because incorrect phase X feedback can trigger torque reduction or limp mode. If the vehicle loses power or displays a shutdown warning, pull over safely and arrange service.
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.