P0D21
Battery Charger A Output Voltage Too Low
P0D21 is an OBD-II diagnostic trouble code meaning: Battery Charger A Output Voltage Too Low. Common causes: charger a fault, problems with high voltage battery. Estimated repair cost: $167–556.
Symptoms
- Reduced hybrid system efficiency
- Reducing electric range
- The Check Engine light comes on
- The car goes into emergency mode
- Error message on display
Causes
- Charger A fault
- Problems with high voltage battery
- Open or short circuit in the charging circuit
- Malfunction of the hybrid system control module
- Problems with the wiring harness or connectors
How to Fix
- Check the condition of the high-voltage battery
- Check the integrity of the charging circuit
- Diagnose charger A
- Check connections and connectors in the system
- Scan for other trouble codes
- Repair only from an authorized dealer
Related codes
Error P0D21 by Vehicle Brand
FAQ
What does the P0D21 code mean?
P0D21 is an OBD-II diagnostic trouble code that indicates: Battery Charger A Output Voltage Too Low
What causes a P0D21 error code?
The most common causes of P0D21 include: Charger A fault; Problems with high voltage battery; Open or short circuit in the charging circuit; Malfunction of the hybrid system control module.
How do I fix a P0D21 diagnostic trouble code?
To fix P0D21: Check the condition of the high-voltage battery. Check the integrity of the charging circuit. Diagnose charger A. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0D21?
Do not drive — repair immediately
How much does it cost to fix P0D21?
The estimated repair cost for P0D21 is $167–556. Actual cost depends on your vehicle, location, and labor rates.
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