OBD Guide
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P1A63

Starter/Generator Control Module Internal Circuit

P1A63 is an OBD-II diagnostic trouble code meaning: Starter/Generator Control Module Internal Circuit. Common causes: control module internal fault, module power problems. Estimated repair cost: $56–167.

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

Symptoms

  • Problems starting the engine
  • Check Engine Light Is On
  • Unstable operation of the charging system
  • Disabling the start-stop system
  • Reduced generator performance

Causes

  • Control module internal fault
  • Module power problems
  • Wiring harness damage
  • Contact corrosion
  • Module overheating

How to Fix

  1. Check the power supply and ground of the module
  2. Inspect the wiring harness for damage
  3. Check contacts for corrosion
  4. Test the module using diagnostic equipment
  5. Replace the control module if necessary

Related codes

P1A64P1A65

FAQ

What does the P1A63 code mean?

P1A63 is an OBD-II diagnostic trouble code that indicates: Starter/Generator Control Module Internal Circuit

What causes a P1A63 error code?

The most common causes of P1A63 include: Control module internal fault; Module power problems; Wiring harness damage; Contact corrosion.

How do I fix a P1A63 diagnostic trouble code?

To fix P1A63: Check the power supply and ground of the module. Inspect the wiring harness for damage. Check contacts for corrosion. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P1A63?

Yes, but get it checked soon

How much does it cost to fix P1A63?

The estimated repair cost for P1A63 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat