OBD Guide
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P1E90

Hybrid/EV Battery Interface Control Module 1 Read Only Memory Performance

P1E90 is an OBD-II diagnostic trouble code meaning: Hybrid/EV Battery Interface Control Module 1 Read Only Memory Performance. Common causes: internal control module programming error, physical damage to the rom chip. Estimated repair cost: $278–1333.

Severity
🚨 Critical
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$278–1333 (est.)

Symptoms

  • Check Engine light comes on
  • Hybrid system power reduction
  • Inability to switch to electric mode
  • Hybrid system malfunction warnings appear
  • Reduced efficiency of the hybrid power plant

Causes

  • Internal control module programming error
  • Physical damage to the ROM chip
  • Control module power supply problems
  • Corrosion or poor contact in module connectors
  • Exposure to extreme temperatures on electronic components

How to Fix

  1. Conduct module diagnostics using specialized equipment
  2. Check the integrity of the wiring harness and module connectors
  3. Measure the supply voltage and quality of the module grounding
  4. Update module software (if possible)
  5. Replacing the Battery Interface Control Module
  6. Repair only from an authorized dealer

Related codes

P1E91P1E92P0A80

FAQ

What does the P1E90 code mean?

P1E90 is an OBD-II diagnostic trouble code that indicates: Hybrid/EV Battery Interface Control Module 1 Read Only Memory Performance

What causes a P1E90 error code?

The most common causes of P1E90 include: Internal control module programming error; Physical damage to the ROM chip; Control module power supply problems; Corrosion or poor contact in module connectors.

How do I fix a P1E90 diagnostic trouble code?

To fix P1E90: Conduct module diagnostics using specialized equipment. Check the integrity of the wiring harness and module connectors. Measure the supply voltage and quality of the module grounding. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1E90?

Limited driving only, diagnose soon

How much does it cost to fix P1E90?

The estimated repair cost for P1E90 is $278–1333. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat