P0D32 means DC/DC converter A, which supplies the 12 V network from the high-voltage battery, has become too hot. Unlike the sensor codes P0C38-P0C3C, the reading itself is trusted; the temperature is the problem. Honda names P0D32 in bulletin 26-025 for 2023-2025 Accord Hybrid models alongside other power control unit overheating codes such as P0A3C and P0A3E: road debris can get past a weak guard and damage the PCU radiator, coolant escapes, and several warning lights appear with reduced hybrid performance. The remedy is a new guard and, if the radiator leaks, a new radiator. Low coolant, a weak electronics coolant pump, a clogged radiator or trapped air are the usual causes. The converter cuts or stops its output, so the 12 V battery can run flat.
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
- Several warning lights including MIL
- Reduced hybrid system performance
- 12 V battery discharges, charging warning
Most likely causes
- Coolant loss in the power electronics circuit, e.g. damaged PCU radiator (Honda)
- Weak electronics coolant pump or air in the cooling circuit
- Radiator clogged or airflow restricted
- Internal converter fault with excess heat
What to check, in order
Start with the simplest. You can tick off each step.
Good to know
- Repair difficulty: hard
- It can trigger limp mode.
- It affects emissions.
What each character of P0D32 means
- P: Powertrain: engine and transmission
- 0: Generic code: same on every make
- D: Subsystem depends on the code range
- 32: Specific fault in that system
Frequently asked questions
Can I keep driving with code P0D32?
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 P0D32?
The most common causes are: coolant loss in the power electronics circuit, e.g. damaged PCU radiator (Honda); weak electronics coolant pump or air in the cooling circuit; radiator clogged or airflow restricted.
Related codes
- P0C38DC/DC Converter Temperature Sensor A Circuit
- P0C39DC/DC Converter Temperature Sensor A Range/Performance
- P0A94DC/DC Converter A Performance
- P0A3CDrive Motor A Inverter Over Temperature
- P0A3EGenerator Inverter Over Temperature
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.