OBD Guide
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P1A58

Hybrid Battery Pack Relay Open

P1A58 is an OBD-II diagnostic trouble code meaning: Hybrid Battery Pack Relay Open. Common causes: hybrid battery relay malfunction, broken or damaged wiring. Estimated repair cost: $56–167.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Hybrid system does not turn on
  • Hybrid system warning light on dashboard
  • Reduced power or inability to switch to electric mode
  • Errors in the operation of the regenerative braking system
  • The car goes into emergency mode

Causes

  • Hybrid battery relay malfunction
  • Broken or damaged wiring
  • Poor contact in connectors
  • Corrosion of relay contacts
  • Control module malfunction

How to Fix

  1. Check the condition of the hybrid battery relay
  2. Inspect wiring and connectors for damage
  3. Clean relay contacts from corrosion
  4. Check the operation of the control module
  5. Replace relay if necessary

Related codes

P1A59P1A60P0A80

FAQ

What does the P1A58 code mean?

P1A58 is an OBD-II diagnostic trouble code that indicates: Hybrid Battery Pack Relay Open

What causes a P1A58 error code?

The most common causes of P1A58 include: Hybrid battery relay malfunction; Broken or damaged wiring; Poor contact in connectors; Corrosion of relay contacts.

How do I fix a P1A58 diagnostic trouble code?

To fix P1A58: Check the condition of the hybrid battery relay. Inspect wiring and connectors for damage. Clean relay contacts from corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A58?

Do not drive — repair immediately

How much does it cost to fix P1A58?

The estimated repair cost for P1A58 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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