OBD Guide
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P3031

Hybrid/EV Battery Interface Control Module 11 Read Only Memory

P3031 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 11 Read Only Memory. Common causes: module software failure, rom memory corruption. Estimated repair cost: $167–556.

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

Symptoms

  • Check Engine light comes on
  • Reduced vehicle power
  • Switching to emergency mode
  • Battery charging problems
  • Error message on display

Causes

  • Module software failure
  • ROM memory corruption
  • Module power problems
  • Short circuit in the circuit
  • Physical damage to the module

How to Fix

  1. Module diagnostics using a scanner
  2. Checking power and grounding circuits
  3. Flashing or updating module software
  4. Replacing the Battery Interface Control Module
  5. Repair only from an authorized dealer

Related codes

P0A80P0A7FP1E00

FAQ

What does the P3031 code mean?

P3031 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 11 Read Only Memory

What causes a P3031 error code?

The most common causes of P3031 include: Module software failure; ROM memory corruption; Module power problems; Short circuit in the circuit.

How do I fix a P3031 diagnostic trouble code?

To fix P3031: Module diagnostics using a scanner. Checking power and grounding circuits. Flashing or updating module software. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P3031?

Limited driving only, diagnose soon

How much does it cost to fix P3031?

The estimated repair cost for P3031 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat