OBD Guide

P1FB3

Hybrid/EV Battery Interface Control Module 7 Random Access Memory Performance

P1FB3 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 7 Random Access Memory Performance. Common causes: control module software failure, damage to module ram. 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
  • Hybrid system power reduction
  • Battery charging problems
  • The vehicle goes into emergency mode
  • Reduced performance of the hybrid system

Causes

  • Control module software failure
  • Damage to module RAM
  • Module power problems
  • Corroded or damaged contacts
  • Mechanical damage to the module

How to Fix

  1. Module diagnostics using a scanner
  2. Checking power and grounding circuits
  3. Module software update
  4. Checking the physical condition of the module
  5. Replacing the control module if necessary

Related codes

FAQ

What does the P1FB3 code mean?

P1FB3 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 7 Random Access Memory Performance

What causes a P1FB3 error code?

The most common causes of P1FB3 include: Control module software failure; Damage to module RAM; Module power problems; Corroded or damaged contacts.

How do I fix a P1FB3 diagnostic trouble code?

To fix P1FB3: Module diagnostics using a scanner. Checking power and grounding circuits. Module software update. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1FB3?

Limited driving only, diagnose soon

How much does it cost to fix P1FB3?

The estimated repair cost for P1FB3 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat