AutoCodes – Cadillac – B3723 Cadillac

B3723 Cadillac Code - Rear Wiper Relay Drive Circuit High

Quick Answer

When operation of the rear wiper is selected, battery voltage from the rear wiper switch is applied to the rear wiper switch signal input circuit of the Body Control Module (BCM)). Common causes include Faulty Rear Wiper Relay, Rear Wiper Relay harness is open or shorted, Rear Wiper Relay 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
B3723 Cadillac indicates Rear Wiper Relay Drive Circuit High.
Common causes
Common causes include Faulty Rear Wiper Relay, Rear Wiper Relay harness is open or shorted, Rear Wiper Relay 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 544
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 15, 2020
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Code B3723 Cadillac Description

When operation of the rear wiper is selected, battery voltage from the rear wiper switch is applied to the rear wiper switch signal input circuit of the Body Control Module (BCM)). The BCM responds by switching the rear wiper relay control circuit to ground. This action energizes the rear wiper relay, providing power to the rear wiper motor. The Diagnostic Trouble Code (DTC) sets when the rear wiper relay control circuit is shorted to battery.
OBDII Code B3723 Cadillac - Rear Wiper Relay Drive Circuit High - AutoCodes.com
B3723 Cadillac Code - Rear Wiper Relay Drive Circuit High

What are the Possible Causes of the DTC B3723 Cadillac?

  • Faulty Rear Wiper Relay
  • Rear Wiper Relay harness is open or shorted
  • Rear Wiper Relay circuit poor electrical connection
  • Faulty Body Control Module (BCM)

How to Fix the DTC B3723 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 B3723 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 B3723 Cadillac code?

Need more information on how to fix the B3723 Cadillac code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3723 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 B3723 Cadillac Code

1. What are the common symptoms of OBDII code B3723 in a Cadillac related to the Rear Wiper Relay Drive Circuit High?

The common symptoms include the rear wiper not functioning properly or not turning off, erratic wiper operation, or the wiper getting stuck in one position.

2. What are the possible causes of OBDII code B3723 in a Cadillac?

Possible causes include a faulty rear wiper relay, damaged wiring or connectors in the rear wiper circuit, or a malfunctioning rear wiper motor.

3. How can I diagnose the issue related to OBDII code B3723 in my Cadillac?

To diagnose the issue, you can use an OBDII scanner to read the trouble codes, visually inspect the rear wiper relay and wiring for any visible damage, and perform electrical tests to check the relay and motor operation.

4. Can I still drive my Cadillac with OBDII code B3723 present?

While it may be possible to drive the vehicle with this code, it is recommended to address the issue promptly to ensure the rear wiper functions correctly, especially in adverse weather conditions.

5. How can I repair OBDII code B3723 in my Cadillac?

Repair options include replacing the rear wiper relay, repairing or replacing damaged wiring or connectors, or replacing the rear wiper motor if necessary.

6. Is it safe to clear the OBDII code B3723 in my Cadillac without fixing the issue?

Clearing the code without addressing the underlying problem may temporarily turn off the check engine light, but the issue will likely persist, leading to potential safety concerns and further damage.

7. Are there any preventive measures to avoid OBDII code B3723 in a Cadillac?

Regularly inspecting the rear wiper system for any signs of wear or damage, addressing any wiper issues promptly, and ensuring proper maintenance can help prevent the occurrence of this trouble code.

8. Can extreme weather conditions contribute to triggering OBDII code B3723 in a Cadillac?

Yes, extreme weather conditions such as heavy rain, snow, or ice can put additional strain on the rear wiper system, potentially leading to issues that trigger this trouble code.

9. How long does it typically take to repair OBDII code B3723 in a Cadillac?

The repair time can vary depending on the exact cause of the issue and the extent of the repairs needed. It may take anywhere from half an hour to a few hours to complete the repair.

10. Should I attempt to repair OBDII code B3723 in my Cadillac myself, or should I seek professional help?

If you have experience with automotive electrical systems and feel confident in your abilities, you may attempt the repair yourself. However, if you are unsure or unfamiliar with such repairs, it is recommended to seek professional help to ensure the issue is properly diagnosed and fixed.

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