P3012
Battery Block 2 Becomes Weak
P3012 is an OBD-II diagnostic trouble code meaning: Battery Block 2 Becomes Weak. Common causes: natural battery wear, imbalance between battery cells. Estimated repair cost: $167–889.
Symptoms
- Reduced range on electric drive
- Increased charging time
- Reduced power during acceleration
- Battery status warnings on the dashboard
Causes
- Natural battery wear
- Imbalance between battery cells
- Problems with the battery cooling system
- Battery control unit malfunction
- Frequent deep battery discharges
How to Fix
- Diagnostics of the condition of all battery elements
- Balancing Battery Cells
- Checking the battery cooling system
- Replacement of damaged elements or the entire unit
- Updating the battery management unit software
Related codes
FAQ
What does the P3012 code mean?
P3012 is an OBD-II diagnostic trouble code that indicates: Battery Block 2 Becomes Weak
What causes a P3012 error code?
The most common causes of P3012 include: Natural battery wear; Imbalance between battery cells; Problems with the battery cooling system; Battery control unit malfunction.
How do I fix a P3012 diagnostic trouble code?
To fix P3012: Diagnostics of the condition of all battery elements. Balancing Battery Cells. Checking the battery cooling system. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with P3012?
Yes, but get it checked soon
How much does it cost to fix P3012?
The estimated repair cost for P3012 is $167–889. Actual cost depends on your vehicle, location, and labor rates.
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