What it means
The hybrid control module detects a low fault on the high-voltage battery pack current sensor C. Pack-level current measurement is impaired.
At a glance
- Usually lights the check-engine light
- The engine or gearbox may go into limp mode
How it works
Battery pack current sensor C reports pack current to the hybrid control module. P2BE6 sets when the sensor C signal is lower than the module's expected range, which can happen if the signal wire is shorted to ground or the sensor has an internal short.
Common causes
Most likely first.
- Signal wire shorted to ground
- Internal sensor short
Symptoms
- EV/hybrid system warning light on
- Reduced power output or limp mode
- Charging may fail or be slowed
- Reduced electric range
How to diagnose it
- Record freeze-frame data and inspect live sensor C current data for a low or fixed reading compared with pack operation.
- Inspect the sensor C connector and accessible harness for damage, corrosion, or a signal wire contacting ground.
- Use the manufacturer's wiring diagram to test the sensor C signal wire for a short to ground and check circuit continuity.
- Compare sensor C output with the specified test conditions and the manufacturer's expected response.
- If the harness is sound, test current sensor C for an internal short using the specified procedure.
Common fixes
- Repair the sensor C signal wire where it is shorted to ground.
- Restore secure, clean contact at the sensor C connector.
- Replace current sensor C if it fails the manufacturer's electrical test.
- Confirm the sensor C reading follows pack current after the repair.
Can I keep driving?
The hybrid system may reduce power or stop normal charging because pack current is not being measured reliably. Avoid hard acceleration and strenuous trips, and stop if a hybrid-system warning is accompanied by a major power loss.
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.