What it means
Hybrid/EV battery system current is below the expected range under the monitored conditions.
How it works
The hybrid or EV battery system current sensor reports current entering or leaving the high-voltage battery to the control module. The module sets P0D36 when that measured current is lower than expected for the operating conditions it is monitoring.
Common causes
Most likely first.
- Battery current sensor or circuit fault
- Battery system operating condition outside expected range
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
- Save the freeze-frame data and check live battery-current readings to see when and in which operating state the low reading occurs.
- Compare the battery-current reading with charging or power demand and other available battery data to determine whether the current is genuinely low or being reported incorrectly.
- With the vehicle powered down according to its service instructions, inspect the battery current sensor connector and accessible wiring for looseness, damage, corrosion, or poor contact.
- Check the sensor circuit, including its power, ground, and signal connections, against the wiring diagram and manufacturer's specification.
- If the circuit checks out, have the high-voltage battery system and current sensor evaluated using the vehicle's approved diagnostic procedure.
Common fixes
- Repair a loose, damaged, or corroded battery-current sensor connection.
- Repair damaged sensor wiring or restore a poor circuit connection.
- Replace a faulty battery current sensor after confirming the circuit is sound.
- Address a verified battery-system operating problem that is causing current to fall below the expected range.
Can I keep driving?
A warning may be accompanied by reduced power, charging problems, or less electric range, so avoid relying on the vehicle for a trip that depends on full power or charge. If power drops sharply or charging fails, stop somewhere safe 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.