P0CA4
Hybrid/EV Battery Charging Voltage High
P0CA4 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Charging Voltage High. Common causes: charger fault, problems with the battery management system (bms). Estimated repair cost: $167–889.
Symptoms
- Reduced electric range
- Engine power limitation
- Warning messages on the dashboard
- Battery charging problems
- The car goes into emergency mode
Causes
- Charger fault
- Problems with the Battery Management System (BMS)
- High voltage circuit malfunction
- Damage to battery cells
- Software errors in the control system
How to Fix
- Diagnostics of the charging system using a scanner
- Checking the high voltage circuit for damage
- Charger testing
- Checking the condition and balance of battery cells
- Control system software update
Related codes
Error P0CA4 by Vehicle Brand
FAQ
What does the P0CA4 code mean?
P0CA4 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Charging Voltage High
What causes a P0CA4 error code?
The most common causes of P0CA4 include: Charger fault; Problems with the Battery Management System (BMS); High voltage circuit malfunction; Damage to battery cells.
How do I fix a P0CA4 diagnostic trouble code?
To fix P0CA4: Diagnostics of the charging system using a scanner. Checking the high voltage circuit for damage. Charger testing. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P0CA4?
Do not drive — repair immediately
How much does it cost to fix P0CA4?
The estimated repair cost for P0CA4 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat