AutoCodes – Cadillac – B1935 Cadillac

B1935 Cadillac Code - Left Seat Back Heater Circuit

Quick Answer

When the heated seat function is active, the Memory Seat Module (MSM) supplies battery voltage through the element supply voltage circuit to the seat heater elements. Common causes include Faulty Left Seat Back Heater Element, Left Seat Back Heater Element harness is open or shorted, Left Seat Back Heater Element 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
B1935 Cadillac indicates Left Seat Back Heater Circuit.
Common causes
Common causes include Faulty Left Seat Back Heater Element, Left Seat Back Heater Element harness is open or shorted, Left Seat Back Heater Element 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 577
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 22, 2019
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Code B1935 Cadillac Description

When the heated seat function is active, the Memory Seat Module (MSM) supplies battery voltage through the element supply voltage circuit to the seat heater elements. The module controls the seat temperature by providing a PWM ground through the heated seat element control circuit to the seat heater elements. The module then monitors the current flow through the heating element and the temperature sensor rate of change to verify correct operation. The OBDII code sets when the module detects that the set point temperature is not to factory specifications.
OBDII Code B1935 Cadillac - Left Seat Back Heater Circuit - AutoCodes.com
B1935 Cadillac Code - Left Seat Back Heater Circuit

What are the Possible Causes of the DTC B1935 Cadillac?

  • Faulty Left Seat Back Heater Element
  • Left Seat Back Heater Element harness is open or shorted
  • Left Seat Back Heater Element circuit poor electrical connection
  • Faulty Memory Seat Module (MSM)

How to Fix the DTC B1935 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1935 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 B1935 Cadillac Code

1. What are the common symptoms of OBDII code B1935 in a Cadillac related to the Left Seat Back Heater Circuit?

- Common symptoms include a non-functional or malfunctioning left seat back heater, lack of heat on the left side of the seat, and an illuminated warning light on the dashboard.

2. What are the possible causes of OBDII code B1935 in a Cadillac?

- The code B1935 in a Cadillac is typically triggered by a fault in the left seat back heater circuit, which can be caused by a damaged heater element, faulty wiring, a blown fuse, or a malfunctioning control module.

3. How can I diagnose the issue related to OBDII code B1935 in my Cadillac's Left Seat Back Heater Circuit?

- To diagnose the issue, you can use an OBDII scanner to retrieve the specific error code. Additionally, you can visually inspect the wiring and connectors related to the left seat back heater, as well as test the heater element for continuity using a multimeter.

4. What are some repair tips for fixing OBDII code B1935 in a Cadillac?

- Repair tips include checking and replacing any blown fuses related to the left seat back heater circuit, repairing or replacing damaged wiring or connectors, and testing and replacing the heater element if necessary.

5. Can I repair OBDII code B1935 in a Cadillac by myself, or should I seek professional help?

- Depending on your level of automotive repair experience and access to tools, you may be able to address the issue yourself by following repair guides and using proper diagnostic equipment. However, if you are unsure or uncomfortable with the repair process, it is recommended to seek professional help.

6. Is it safe to continue driving my Cadillac with OBDII code B1935 related to the Left Seat Back Heater Circuit?

- It is generally safe to drive your Cadillac with this code, as it primarily affects the functionality of the seat heater. However, it is advisable to address the issue promptly to ensure the proper operation of the seat heating system.

7. Will fixing OBDII code B1935 in my Cadillac require expensive parts replacement?

- The cost of parts replacement for OBDII code B1935 in a Cadillac can vary depending on the specific cause of the issue. In some cases, simple repairs such as replacing a fuse or repairing wiring may be all that is needed, while other situations may require more costly components like a new heater element.

8. How long does it typically take to repair OBDII code B1935 in a Cadillac?

- The repair time for OBDII code B1935 in a Cadillac can vary based on the extent of the issue and the complexity of the repair needed. Simple fixes like replacing a fuse may take just a few minutes, while more involved repairs such as replacing the heater element could take longer.

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