OBD Guide
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P163D

Secondary Generator Field Terminal Circuit High

P163D is an OBD-II diagnostic trouble code meaning: Secondary Generator Field Terminal Circuit High. Common causes: faulty generator, problems with the voltage regulator. Estimated repair cost: $56–278.

Severity
🔴 High
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–278 (est.)

Symptoms

  • Check Engine Light Is On
  • Unstable operation of electrical equipment
  • Recharging the battery
  • Flashing or burning out light bulbs
  • Problems starting the engine

Causes

  • Faulty generator
  • Problems with the voltage regulator
  • Short circuit in generator circuit
  • Oxidation or damage to contacts
  • Engine control unit malfunction

How to Fix

  1. Check the voltage at the battery terminals with the engine running
  2. Inspect the wiring and connectors of the generator
  3. Check the operation of the voltage regulator
  4. Test the generator on the stand
  5. If necessary, replace the generator or voltage regulator

Related codes

P0620P0622P0562

FAQ

What does the P163D code mean?

P163D is an OBD-II diagnostic trouble code that indicates: Secondary Generator Field Terminal Circuit High

What causes a P163D error code?

The most common causes of P163D include: Faulty generator; Problems with the voltage regulator; Short circuit in generator circuit; Oxidation or damage to contacts.

How do I fix a P163D diagnostic trouble code?

To fix P163D: Check the voltage at the battery terminals with the engine running. Inspect the wiring and connectors of the generator. Check the operation of the voltage regulator. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with P163D?

Do not drive — repair immediately

How much does it cost to fix P163D?

The estimated repair cost for P163D is $56–278. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat