OBD Guide
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P1FAC

Hybrid/EV Battery Interface Control Module 5 Read Only Memory Performance

P1FAC is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 5 Read Only Memory Performance. Common causes: data corruption in module rom, control module hardware failure. 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 is on
  • Reduced performance of the hybrid system
  • Battery charging problems
  • Unusual behavior of the power plant
  • Error message on display

Causes

  • Data corruption in module ROM
  • Control module hardware failure
  • Module power problems
  • Corroded or damaged connectors
  • Software problems

How to Fix

  1. Check the condition of connectors and wiring harnesses
  2. Diagnose the scanner control module
  3. Try to reflash the module
  4. If necessary, replace the control module
  5. Check associated power and grounding systems

Related codes

P1FABP1FADP1FAE

FAQ

What does the P1FAC code mean?

P1FAC is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 5 Read Only Memory Performance

What causes a P1FAC error code?

The most common causes of P1FAC include: Data corruption in module ROM; Control module hardware failure; Module power problems; Corroded or damaged connectors.

How do I fix a P1FAC diagnostic trouble code?

To fix P1FAC: Check the condition of connectors and wiring harnesses. Diagnose the scanner control module. Try to reflash the module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1FAC?

Limited driving only, diagnose soon

How much does it cost to fix P1FAC?

The estimated repair cost for P1FAC is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat