OBD Guide
ENFRDEESPT

P3011

Battery Block 1 Becomes Weak

P3011 is an OBD-II diagnostic trouble code meaning: Battery Block 1 Becomes Weak. Common causes: natural battery wear, cell imbalance in battery pack. Estimated repair cost: $167–889.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$167–889 (est.)

Symptoms

  • Hybrid system power reduction
  • Reducing electric range
  • More frequent battery charging
  • Warning messages on the dashboard
  • Reduced overall system efficiency

Causes

  • Natural battery wear
  • Cell imbalance in battery pack
  • Problems with the Battery Management System (BMS)
  • Damage to battery cells
  • Problems with battery temperature

How to Fix

  1. Diagnosis of battery condition using specialized equipment
  2. Checking the Battery Management System (BMS)
  3. Balancing Battery Cells
  4. Replacing a faulty battery pack if necessary
  5. Checking the battery cooling system

Related codes

P3012P3013P0A80

FAQ

What does the P3011 code mean?

P3011 is an OBD-II diagnostic trouble code that indicates: Battery Block 1 Becomes Weak

What causes a P3011 error code?

The most common causes of P3011 include: Natural battery wear; Cell imbalance in battery pack; Problems with the Battery Management System (BMS); Damage to battery cells.

How do I fix a P3011 diagnostic trouble code?

To fix P3011: Diagnosis of battery condition using specialized equipment. Checking the Battery Management System (BMS). Balancing Battery Cells. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3011?

Yes, but get it checked soon

How much does it cost to fix P3011?

The estimated repair cost for P3011 is $167–889. Actual cost depends on your vehicle, location, and labor rates.

FRDEESPT

See also: Russian version · NationStat