AutoCodes – Cadillac – B1910 Cadillac

B1910 Cadillac Code - Generator L Terminal Open Circuit

Quick Answer

Generator grounds circuit when the ignition switch is in the RUN position and engine speed is less than 400 RPM. Common causes include Faulty Generator (Alternator), Generator harness is open or shorted, Generator circuit poor electrical connection. 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: B1910 Cadillac indicates Generator L Terminal Open Circuit.
Common causes: Common causes include Faulty Generator (Alternator), Generator harness is open or shorted, Generator circuit poor electrical connection.
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 3,883

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 Jul 27, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1910 Cadillac Description

Generator grounds circuit when the ignition switch is in the RUN position and engine speed is less than 400 RPM. The Diagnostic Trouble Code (DTC) B1910 will set when the Instrument Panel Cluster (IPC) determines that engine speed is less than 400 RPM and senses a high voltage (open) in the generator.

OBDII Code B1910 Cadillac - Generator L Terminal Open Circuit - AutoCodes.com — B1910 Cadillac Code - Generator L Terminal Open Circuit

What does this mean?

What are the Possible Causes of the DTC B1910 Cadillac?

Faulty Generator (Alternator)
Generator harness is open or shorted
Generator circuit poor electrical connection

How to Fix the DTC B1910 Cadillac?

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 B1910 Cadillac 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.

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Get the B1910 Cadillac code diagnosed by a professional: Find a repair shop in your area

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 B1910 Cadillac Code

1. What are the common symptoms of OBDII code B1910 in a Cadillac related to the Generator L Terminal Open Circuit?

- The common symptoms include issues with charging the battery, illuminated battery warning light on the dashboard, and potential loss of power steering assist.

2. What are the possible causes of the Generator L Terminal Open Circuit OBDII code in a Cadillac?

- The code B1910 can be triggered by a faulty generator (alternator), damaged wiring or connectors in the charging system, or a malfunctioning battery.

3. How can I diagnose the Generator L Terminal Open Circuit issue in my Cadillac?

- To diagnose the problem, you can use a multimeter to test the voltage output of the alternator, visually inspect the wiring and connectors for any damage, and perform a battery test to check its condition.

4. Can a bad battery cause the B1910 code to appear in a Cadillac?

- Yes, a weak or failing battery can lead to the Generator L Terminal Open Circuit code due to improper charging and voltage regulation issues.

5. What are some repair tips for fixing the Generator L Terminal Open Circuit in a Cadillac?

- Repair tips include checking and replacing damaged wiring, ensuring proper connection of the alternator, and replacing the alternator if it's found to be faulty.

6. Is it safe to continue driving my Cadillac with the B1910 code present?

- It is not recommended to drive the vehicle with the Generator L Terminal Open Circuit issue as it can lead to a drained battery, potential stalling, and other electrical system malfunctions.

7. Can a DIY enthusiast fix the B1910 code in a Cadillac, or is it best left to professionals?

- While some basic checks like inspecting wiring and connectors can be done by a DIY enthusiast, diagnosing and repairing alternator or complex electrical issues may require professional expertise.

8. How much does it typically cost to repair the Generator L Terminal Open Circuit issue in a Cadillac?

- The cost of repair can vary depending on the exact cause of the problem, but it may involve expenses for parts such as the alternator, wiring components, and labor charges for the repair work.

9. What long-term effects can the B1910 code have on the Cadillac if left unresolved?

- Ignoring the Generator L Terminal Open Circuit issue can lead to further damage to the electrical system, premature battery failure, and potential breakdowns due to charging system issues.

10. Are there any preventive measures to avoid encountering the B1910 code in a Cadillac in the future?

- Regular maintenance of the charging system, including checking the battery, alternator, and wiring connections, can help prevent the Generator L Terminal Open Circuit code from appearing in the future.