AutoCodes – Cadillac – B1380 Cadillac

B1380 Cadillac Code - Control Module Ignition Accessory Circuit

Quick Answer

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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: B1380 Cadillac indicates Control Module Ignition Accessory Circuit.
Common causes: Common causes include Faulty Ignition Switch, Ignition Switch harness is open or shorted, Ignition Switch 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 12,212

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 Apr 17, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B1380 Cadillac Description

The vehicle Power Mode Master (PMM) is the Body Control Module (BCM). The ignition switch is a low-current switch with multiple discrete circuits to the BCM. The BCM logic uses the ignition switch positions to identify the operator's desired power mode and activate specific discrete signals, and serial data messages for the operation of different subsystems as necessary. Other modules which have switched voltage inputs may operate in a default mode if the Power Mode Master serial data message does not match what the individual module can detect from its own connections.
The Power Mode Master will activate relays and other direct outputs of the Power Mode Master as needed according to the calculated power mode. Some relays controlled by the BCM are switched ignition voltage outputs that are pass-through circuits within the BCM directly from the ignition switch. If these circuits are short to ground, the B+ circuit fuse to the ignition switch will open.

OBDII Code B1380 Cadillac - Control Module Ignition Accessory Circuit - AutoCodes.com — B1380 Cadillac Code - Control Module Ignition Accessory Circuit

What does this mean?

What are the Possible Causes of the DTC B1380 Cadillac?

Faulty Ignition Switch
Ignition Switch harness is open or shorted
Ignition Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1380 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 does this mean?

Code Tech Notes

B1380:01 Control Module Ignition Accessory Circuit Short to Battery
B1380:04 Control Module Ignition Accessory Circuit Short to Ground or Open

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1380 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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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 B1380 Cadillac Code

1. What are the common symptoms of OBDII code B1380 in a Cadillac related to the Control Module Ignition Accessory Circuit?

- Common symptoms include issues with the ignition system, such as difficulty starting the vehicle or accessories failing to operate properly.

2. What are the possible causes of OBDII code B1380 in a Cadillac?

- The code B1380 in a Cadillac may be triggered by a faulty ignition switch, damaged wiring in the ignition circuit, or a malfunctioning control module.

3. How can I diagnose the cause of OBDII code B1380 in my Cadillac?

- To diagnose the issue, it is recommended to perform a thorough inspection of the ignition system, check for any visible damage to wiring, and use a diagnostic scanner to pinpoint the exact source of the problem.

4. Can a DIY enthusiast repair OBDII code B1380 in a Cadillac related to the Control Module Ignition Accessory Circuit?

- While some simple repairs like checking and replacing faulty fuses or loose wiring can be done by DIY enthusiasts, more complex issues with the control module or ignition system may require professional diagnosis and repair.

5. Is it safe to drive my Cadillac with OBDII code B1380 present?

- It is not recommended to drive your Cadillac with OBDII code B1380 present, as it can lead to potential issues with the ignition system that may affect the vehicle's overall performance and safety.

6. How much does it typically cost to repair OBDII code B1380 in a Cadillac?

- The cost of repairing OBDII code B1380 in a Cadillac can vary depending on the root cause of the issue, but it may range from a few hundred to a thousand dollars, including parts and labor.

7. Can resetting the OBDII code B1380 in a Cadillac fix the issue temporarily?

- Resetting the code may temporarily clear the warning light, but it will not resolve the underlying problem causing OBDII code B1380 related to the Control Module Ignition Accessory Circuit.

8. Are there any preventive maintenance tips to avoid triggering OBDII code B1380 in a Cadillac?

- Regularly inspecting the ignition system, ensuring proper wiring connections, and addressing any electrical issues promptly can help prevent triggering OBDII code B1380 in a Cadillac.

9. Will OBDII code B1380 affect the overall performance of my Cadillac?

- OBDII code B1380 related to the Control Module Ignition Accessory Circuit can impact the overall performance of your Cadillac by causing issues with the ignition system, affecting starting and accessory operation.

10. How long does it typically take to repair OBDII code B1380 in a Cadillac?

- The repair time for OBDII code B1380 in a Cadillac can vary depending on the complexity of the issue and the availability of parts, but it may take a few hours to a day for diagnosis and repair.