OBD Guide
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P3023

Battery Block 13 Becomes Weak

P3023 is an OBD-II diagnostic trouble code meaning: Battery Block 13 Becomes Weak. Common causes: natural battery wear, battery cell imbalance. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Hybrid system power reduction
  • Increased fuel consumption
  • Warning messages on the dashboard
  • Reduced efficiency of regenerative braking
  • Problems starting the engine

Causes

  • Natural battery wear
  • Battery cell imbalance
  • Problems with the battery management system
  • Battery damage
  • Poor contact in the electrical circuit

How to Fix

  1. Battery status diagnostics
  2. Checking the battery cell balance
  3. Testing the Battery Management System
  4. Replacing a faulty battery pack
  5. Control system software update

Related codes

P3020P3021P3022

FAQ

What does the P3023 code mean?

P3023 is an OBD-II diagnostic trouble code that indicates: Battery Block 13 Becomes Weak

What causes a P3023 error code?

The most common causes of P3023 include: Natural battery wear; Battery cell imbalance; Problems with the battery management system; Battery damage.

How do I fix a P3023 diagnostic trouble code?

To fix P3023: Battery status diagnostics. Checking the battery cell balance. Testing the Battery Management System. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3023?

Limited driving only, diagnose soon

How much does it cost to fix P3023?

The estimated repair cost for P3023 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat