OBD Guide
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P3241

Hybrid/EV Battery Interface Control Module 2 Cell Overvoltage

P3241 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 2 Cell Overvoltage. Common causes: cell balancing controller malfunction, battery degradation. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$167–556 (est.)

Symptoms

  • Reduced range of an electric vehicle
  • Warning messages on the dashboard
  • Forced power limitation
  • Battery charging problems
  • Battery compartment overheating

Causes

  • Cell balancing controller malfunction
  • Battery degradation
  • Problems in the battery cooling system
  • Charger fault
  • Damage to high voltage wiring

How to Fix

  1. High voltage system diagnostics
  2. Checking battery cell balancing
  3. Testing the battery cooling system
  4. Replacing faulty battery cells
  5. VU software update

Related codes

P3231P3245P3250

FAQ

What does the P3241 code mean?

P3241 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 2 Cell Overvoltage

What causes a P3241 error code?

The most common causes of P3241 include: Cell balancing controller malfunction; Battery degradation; Problems in the battery cooling system; Charger fault.

How do I fix a P3241 diagnostic trouble code?

To fix P3241: High voltage system diagnostics. Checking battery cell balancing. Testing the battery cooling system. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3241?

Do not drive — repair immediately

How much does it cost to fix P3241?

The estimated repair cost for P3241 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat