AutoCodes – Cadillac – B1385 Cadillac

B1385 Cadillac Code - Device Ignition START Circuit

Quick Answer

The Body Control Module (BCM), monitors the ignition inputs OFF, ignition 3, crank and ignition 1 supplied from the ignition switch. 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: B1385 Cadillac indicates Device Ignition START 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 1,463

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 Mar 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1385 Cadillac Description

The Body Control Module (BCM), monitors the ignition inputs OFF, ignition 3, crank and ignition 1 supplied from the ignition switch. The BCM uses the sequence that the signals appear and their voltage levels to determine the power mode called for by the vehicle operator using the ignition switch. A 12-volt reference voltage is supplied by the BCM to the ignition switch over a discrete circuit. The ignition switch uses this voltage for power mode signal discrimination. When the operator places the Ignition switch in the Start position, the Crank circuit delivers the signal to the BCM.

OBDII Code B1385 Cadillac - Device Ignition START Circuit - AutoCodes.com — B1385 Cadillac Code - Device Ignition START Circuit

What does this mean?

What are the Possible Causes of the DTC B1385 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 B1385 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 B1385 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.

Need more information about the B1385 Cadillac code?

Need more information on how to fix the B1385 Cadillac code? Get Access to Factory Service Manuals

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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 B1385 Cadillac Code

1. What are the common symptoms of OBDII code B1385 in a Cadillac related to the Device Ignition START Circuit?

- Common symptoms include the engine not starting, the engine stalling while driving, and issues with the vehicle's electrical system.

2. What are the possible causes of OBDII code B1385 in a Cadillac?

- Possible causes include a faulty ignition switch, wiring issues in the ignition circuit, a defective starter motor, or a problem with the vehicle's security system.

3. How can I diagnose the cause of OBDII code B1385 in my Cadillac?

- Use a diagnostic scanner to retrieve the trouble codes, inspect the ignition switch and wiring for any visible damage, test the starter motor, and check the vehicle's security system for any malfunctions.

4. Can a faulty ignition switch trigger OBDII code B1385 in a Cadillac?

- Yes, a faulty ignition switch can cause issues with the Device Ignition START Circuit, leading to the triggering of OBDII code B1385.

5. How can I repair OBDII code B1385 in my Cadillac?

- Repair options include replacing the ignition switch, repairing or replacing damaged wiring, fixing any issues with the starter motor, or addressing problems with the vehicle's security system.

6. Are there any tips for preventing OBDII code B1385 in a Cadillac?

- Regularly maintain your vehicle's ignition system, address any electrical issues promptly, and avoid using unauthorized or aftermarket electronic devices that may interfere with the ignition circuit.

7. Can OBDII code B1385 cause any long-term damage to my Cadillac?

- If left unaddressed, OBDII code B1385 can lead to further electrical issues, potential damage to the starter motor, and may prevent the vehicle from starting altogether.

8. Is it safe to drive my Cadillac with OBDII code B1385 present?

- It is not recommended to drive your Cadillac with OBDII code B1385 present, as it can result in unexpected stalling or failure to start, posing a safety risk.

9. Can a DIY enthusiast repair OBDII code B1385 in a Cadillac?

- Depending on your skill level and access to tools, you may be able to address OBDII code B1385 yourself by following repair guides or tutorials, but professional help is recommended for complex issues.

10. How much does it typically cost to repair OBDII code B1385 in a Cadillac?

- The cost of repairing OBDII code B1385 can vary depending on the specific cause of the issue, but it may range from $100 to $500 or more, including parts and labor.