P0DCE: Hybrid/EV Battery Cell Balancing Circuit I Stuck Off

P0DCE means the bleed path of group I does not respond to a balancing request. Ford lists it in the 2019 OBD summary for its full and plug-in hybrids, where the BECM discharges only the highest cells to match the rest and runs this check for 100 ms at power-up before the contactors close. Because the code concerns a switch that never conducts, nothing happens suddenly while driving. The penalty grows from charge to charge: the Intersil application note AN141 explains that in a series string the unbalanced cells hit full charge before the others and the weakest cell then limits what the pack can deliver. For a plug-in that means less electric range. The fault has to be found under CARB's hybrid rules. The stuck-on opposite is P0DCD.

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

Electric range decreases over many charging cycles
Cells of group I highest at the end of charging
Check engine light without noticeable effect while driving

Most likely causes

Open bleed resistor in circuit I
Balancing switch of group I that no longer closes
Cell tap of group I loose at the busbar

What to check, in order

Start with the simplest. You can tick off each step.

Read the codes with a hybrid-compatible scanner and write down the freeze frame data
Use the scanner to command the movement and compare the actual position with the requested one.
Make sure the battery cooling air intake is clean
Check the 12 V auxiliary battery, which can also trigger warnings
Leave any high-voltage measurements to a specialized repair shop

Good to know

It affects emissions.

What each character of P0DCE means

P: Powertrain: engine and transmission
0: Generic code: same on every make
D: Subsystem depends on the code range
CE: Specific fault in that system

Frequently asked questions

Can I keep driving with code P0DCE?

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 P0DCE?

The most common causes are: open bleed resistor in circuit I; balancing switch of group I that no longer closes; cell tap of group I loose at the busbar.

Related codes

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.