OBD Guide
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P1A93

14-Volt Power Module Stuck OFF

P1A93 is an OBD-II diagnostic trouble code meaning: 14-Volt Power Module Stuck OFF. Common causes: 14v power module malfunction, problems with wiring or connectors. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Start-stop systems do not work
  • Reduced hybrid system efficiency
  • Check Engine light comes on
  • Reduced vehicle power
  • Battery charging problems

Causes

  • 14V power module malfunction
  • Problems with wiring or connectors
  • Faulty relays or fuses
  • Problems with the ECU
  • Short circuit in the circuit

How to Fix

  1. Check the condition of fuses and relays
  2. Inspect wiring and connectors for damage
  3. Check the operation of the 14-volt power module
  4. Scan the ECU for other errors
  5. Replace the faulty module if necessary

Related codes

P1A94P1A95P1A96

FAQ

What does the P1A93 code mean?

P1A93 is an OBD-II diagnostic trouble code that indicates: 14-Volt Power Module Stuck OFF

What causes a P1A93 error code?

The most common causes of P1A93 include: 14V power module malfunction; Problems with wiring or connectors; Faulty relays or fuses; Problems with the ECU.

How do I fix a P1A93 diagnostic trouble code?

To fix P1A93: Check the condition of fuses and relays. Inspect wiring and connectors for damage. Check the operation of the 14-volt power module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A93?

Yes, but get it checked soon

How much does it cost to fix P1A93?

The estimated repair cost for P1A93 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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