P0D24: Battery Charger A Temperature Too High

What it means

Battery charger A reports temperature above the safety threshold. Sustained high load or cooling failure.

How it works

Battery charger A manages charging and monitors its operating temperature to protect its power electronics. P0D24 sets when charger A reports a temperature above its safety threshold, which can cause charging to be limited or stopped.

Common causes

Most likely first.

1. Sustained high charging current
2. Charger cooling failure

Symptoms

• Charge status indicator shows fault
• Charging may not start or interrupts
• Slower-than-expected charge rate

How to diagnose it

1. Review freeze-frame and live temperature data to see whether charger A overheated during sustained charging or began hot.
2. Check whether the vehicle was charging at high load or in unusually hot conditions when the fault appeared.
3. Inspect accessible charger cooling passages, vents, and coolant connections, if fitted, for blockage, leaks, or visible damage.
4. Use scan data and the manufacturer's procedure to confirm whether charger cooling components operate when requested.
5. If cooling and operating conditions are normal, test charger A's temperature reporting and internal operation to the manufacturer's specification.

Common fixes

• Clear debris blocking accessible charger cooling vents or passages.
• Repair a leaking or damaged charger cooling connection, if fitted.
• Repair a failed cooling component identified by testing.
• Replace battery charger A if its temperature sensor or power electronics are confirmed faulty.

Can I keep driving?

If the charger reports overheating, stop the charging session and let the vehicle cool in a safe, ventilated place; do not continue repeated charging attempts. Seek prompt diagnosis if the warning returns, since continued overheating can damage the charger.