AutoCodes – Hyundai – P0625 Hyundai

P0625 Hyundai Code - Generator Field Terminal Circuit Low

Quick Answer

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. Common causes include Faulty battery, Generator drive belt missing or loose, Faulty Generator. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0625 Hyundai indicates Generator Field Terminal Circuit Low.
Common causes: Common causes include Faulty battery, Generator drive belt missing or loose, Faulty Generator.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 38,607

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 01, 2019

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P0625 Hyundai Description

The Powertrain Control Module (PCM) monitors generator load from the generator/regulator in the form of frequency. The concern indicates the input is lower than the load should be in normal operation. The load input could be low when no generator output exists.

OBDII Code P0625 Hyundai - Generator Field Terminal Circuit Low - AutoCodes.com — P0625 Hyundai Code - Generator Field Terminal Circuit Low

What does this mean?

What are the Possible Causes of the DTC P0625 Hyundai?

Faulty battery
Generator drive belt missing or loose
Faulty Generator
Generator harness is open or shorted
Generator circuit poor electrical connection

How to Fix the DTC P0625 Hyundai?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

If the battery is OK then the alternator is more than likely the problem.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0625 Hyundai code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P0625 Hyundai code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0625 Hyundai Code

1. What does the OBDII code P0625 mean for a Hyundai?

P0625 indicates a "Generator Field Terminal Circuit Low," meaning the voltage regulator in the alternator is not operating correctly or the field terminal circuit has low voltage.

2. What are the common symptoms of code P0625 in a Hyundai?

Symptoms include a lit check engine light, low battery voltage, dim headlights, difficulty starting the vehicle, or a dead battery.

3. What causes the P0625 code to appear on a Hyundai?

Common causes include a faulty alternator, damaged or corroded wiring in the generator field terminal circuit, a failed voltage regulator, or a bad battery.

4. Can a bad battery trigger the P0625 code on a Hyundai?

Yes, a weak or failing battery can cause low voltage in the generator field terminal circuit, potentially triggering the P0625 code.

5. How do I fix the P0625 code on a Hyundai?

Start by inspecting the alternator, battery, and wiring for damage or corrosion. Replace the alternator or voltage regulator if defective. Ensure all connections are clean and secure.

6. Is it safe to drive a Hyundai with the P0625 code?

It is not recommended to drive with this code for an extended period as it can lead to battery failure and cause the vehicle to stall unexpectedly.

7. How can I test the alternator to diagnose the P0625 code on a Hyundai?

Use a multimeter to check the alternator's output voltage. It should typically read between 13.5 and 14.5 volts when the engine is running. Lower readings may indicate alternator failure.

8. Will clearing the P0625 code fix the issue on a Hyundai?

Clearing the code without addressing the underlying problem will not fix the issue, and the code is likely to return.

9. Can a blown fuse cause the P0625 code on a Hyundai?

Yes, a blown fuse in the charging or generator field circuit can lead to low voltage and trigger the P0625 code.

10. How much does it cost to repair the P0625 code on a Hyundai?

The repair cost varies depending on the issue. Replacing an alternator can cost between $300 and $700, while fixing wiring or connections may be less expensive.