OBD Guide
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P1EA0

Hybrid/EV Battery Interface Control Module 4 Performance

P1EA0 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 4 Performance. Common causes: battery interface control module malfunction, problems with the wiring harness or connectors. 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
  • The car goes into emergency mode
  • Reducing electric range
  • Unusual battery level readings

Causes

  • Battery Interface Control Module Malfunction
  • Problems with the wiring harness or connectors
  • Short circuit or open circuit in control circuit
  • Damage from moisture or corrosion
  • Module software error

How to Fix

  1. Diagnose fault codes
  2. Check the integrity of wire harnesses and connectors
  3. Test module power and grounding
  4. Update or reflash module software
  5. If necessary, replace the control module

Related codes

P1EA1P1EA2P0AA6

FAQ

What does the P1EA0 code mean?

P1EA0 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 4 Performance

What causes a P1EA0 error code?

The most common causes of P1EA0 include: Battery Interface Control Module Malfunction; Problems with the wiring harness or connectors; Short circuit or open circuit in control circuit; Damage from moisture or corrosion.

How do I fix a P1EA0 diagnostic trouble code?

To fix P1EA0: Diagnose fault codes. Check the integrity of wire harnesses and connectors. Test module power and grounding. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1EA0?

Limited driving only, diagnose soon

How much does it cost to fix P1EA0?

The estimated repair cost for P1EA0 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat