OBD Guide
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P1B90

Hybrid/Electric Vehicle Battery 58 Circuit Performance

P1B90 is an OBD-II diagnostic trouble code meaning: Hybrid/Electric Vehicle Battery 58 Circuit Performance. Common causes: poor contact in battery circuit 58, damage to wiring or connectors. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Hybrid system power reduction
  • Increased fuel consumption
  • Check Engine Light Illuminates
  • Reduced efficiency of regenerative braking
  • Problems with charging a high-voltage battery

Causes

  • Poor contact in battery circuit 58
  • Damage to wiring or connectors
  • Malfunction of the battery itself 58
  • Problems with the battery management system
  • Contact corrosion

How to Fix

  1. Check the integrity of wiring and connectors
  2. Measure the voltage on the battery 58
  3. Check circuit resistance
  4. Scan the system for other fault codes
  5. Check battery cell balance

Related codes

P1B91P1B92P0A80

FAQ

What does the P1B90 code mean?

P1B90 is an OBD-II diagnostic trouble code that indicates: Hybrid/Electric Vehicle Battery 58 Circuit Performance

What causes a P1B90 error code?

The most common causes of P1B90 include: Poor contact in battery circuit 58; Damage to wiring or connectors; Malfunction of the battery itself 58; Problems with the battery management system.

How do I fix a P1B90 diagnostic trouble code?

To fix P1B90: Check the integrity of wiring and connectors. Measure the voltage on the battery 58. Check circuit resistance. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1B90?

Limited driving only, diagnose soon

How much does it cost to fix P1B90?

The estimated repair cost for P1B90 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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