OBD Guide
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P1A15

Immediate Shutdown Signal B Circuit Short

P1A15 is an OBD-II diagnostic trouble code meaning: Immediate Shutdown Signal B Circuit Short. Common causes: short circuit in signal circuit b, wiring harness damage. Estimated repair cost: $56–167.

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

Symptoms

  • Check Engine light comes on
  • Problems starting the hybrid system
  • Reduced engine power
  • Unintentional system shutdown
  • Errors in the operation of the hybrid system

Causes

  • Short circuit in signal circuit B
  • Wiring harness damage
  • Control module malfunction
  • Contact corrosion
  • Relay or fuse problems

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the condition of contacts and connectors
  3. Check the operation of the control module
  4. Replace damaged components
  5. Repair only from an authorized dealer

Related codes

P1A14P1A16

FAQ

What does the P1A15 code mean?

P1A15 is an OBD-II diagnostic trouble code that indicates: Immediate Shutdown Signal B Circuit Short

What causes a P1A15 error code?

The most common causes of P1A15 include: Short circuit in signal circuit B; Wiring harness damage; Control module malfunction; Contact corrosion.

How do I fix a P1A15 diagnostic trouble code?

To fix P1A15: Check the integrity of the wiring harness. Check the condition of contacts and connectors. Check the operation of the control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A15?

Do not drive — repair immediately

How much does it cost to fix P1A15?

The estimated repair cost for P1A15 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat