AutoCodes – Saab – P1628 Saab

P1628 Saab Code - Battery Voltage Too Low / High

Quick Answer

P1628 Saab indicates Battery Voltage Too Low / High. Common causes include Low battery charger, Faulty Alternator, Alternator harness is open or shorted. 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: P1628 Saab indicates Battery Voltage Too Low / High.
Common causes: Common causes include Low battery charger, Faulty Alternator, Alternator harness is open or shorted.
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 2,382

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 Sep 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P1628 Saab Description

OBDII Code P1628 Saab - Battery Voltage Too Low / High - AutoCodes.com — P1628 Saab Code - Battery Voltage Too Low / High

What does this mean?

What are the Possible Causes of the DTC P1628 Saab?

Low battery charger
Faulty Alternator
Alternator harness is open or shorted
Alternator circuit poor electrical connection

How to Fix the DTC P1628 Saab?

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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P1628 Saab 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 P1628 Saab code?

Need more information on how to fix the P1628 Saab code? Get Access to Factory Service Manuals

Need Help with the 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 P1628 Saab Code

1. What are the common symptoms of OBDII code P1628 in a Saab related to battery voltage?

The common symptoms of OBDII code P1628 related to battery voltage in a Saab may include issues with starting the vehicle, dimming headlights, erratic electrical behavior, and dashboard warning lights related to the charging system.

2. What are the possible causes of OBDII code P1628 indicating battery voltage too low or high in a Saab?

Possible causes of OBDII code P1628 in a Saab may include a faulty alternator, a weak or failing battery, loose or corroded battery connections, a faulty voltage regulator, or issues with the vehicle's wiring or electrical system.

3. How can I diagnose the cause of OBDII code P1628 related to battery voltage in my Saab?

To diagnose the cause of OBDII code P1628 in a Saab, you can start by checking the battery voltage with a multimeter, inspecting the alternator and voltage regulator for proper operation, and testing the battery and charging system components for any faults.

4. Can low battery voltage cause OBDII code P1628 to trigger in a Saab?

Yes, low battery voltage can trigger OBDII code P1628 in a Saab, as it indicates an issue with the battery not receiving sufficient charge from the alternator or voltage regulator, leading to potential electrical system problems.

5. How serious is OBDII code P1628 indicating battery voltage issues in a Saab?

OBDII code P1628 indicating battery voltage issues in a Saab should be taken seriously, as it can lead to starting problems, electrical malfunctions, and potential damage to the vehicle's electrical components if left unresolved.

6. What are some repair tips for addressing OBDII code P1628 related to battery voltage in a Saab?

Some repair tips for addressing OBDII code P1628 in a Saab include checking and cleaning battery terminals, testing the alternator and voltage regulator, replacing a faulty battery or charging system components, and ensuring proper electrical connections.

7. Can I drive my Saab with OBDII code P1628 indicating battery voltage too low or high?

It is not recommended to drive your Saab with OBDII code P1628 indicating battery voltage issues, as it can lead to potential electrical failures while driving, causing safety hazards and potential damage to the vehicle.

8. How much does it typically cost to repair OBDII code P1628 related to battery voltage in a Saab?

The cost to repair OBDII code P1628 related to battery voltage in a Saab can vary depending on the specific cause of the issue, but it may range from a simple battery replacement costing around $100 to a more complex alternator replacement costing several hundred dollars.

9. Are there any preventive measures to avoid OBDII code P1628 indicating battery voltage problems in a Saab?

To prevent OBDII code P1628 indicating battery voltage problems in a Saab, you can perform regular maintenance on the vehicle's charging system, check the battery and alternator health periodically, and address any electrical issues promptly to avoid potential failures.

10. Can a DIY enthusiast fix OBDII code P1628 related to battery voltage in a Saab?

While some aspects of diagnosing and repairing OBDII code P1628 related to battery voltage in a Saab can be tackled by a DIY enthusiast, it is recommended to have a professional mechanic perform the repairs for complex issues involving the alternator, voltage regulator, or electrical system.