AutoCodes – Generic – B1451

B1451 Code - Wiper Wash/Delay Switch Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Wiper Wash/Delay Switch. Common causes include Faulty Wiper Wash/Delay Switch, Wiper Wash/Delay Switch harness is open or shorted, Wiper Wash/Delay 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: B1451 indicates Wiper Wash/Delay Switch Circuit Open.
Common causes: Common causes include Faulty Wiper Wash/Delay Switch, Wiper Wash/Delay Switch harness is open or shorted, Wiper Wash/Delay 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 5,313

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 12, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1451 Description

The Body Control Module (BCM) monitors the Wiper Wash/Delay Switch. The BCM sets the OBDII code when the Wiper Wash/Delay Switch is not to factory specifications.

OBDII Code B1451 - Wiper Wash/Delay Switch Circuit Open - AutoCodes.com — B1451 Code - Wiper Wash/Delay Switch Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1451?

Faulty Wiper Wash/Delay Switch
Wiper Wash/Delay Switch harness is open or shorted
Wiper Wash/Delay Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1451?

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 B1451 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 B1451 code?

Need more information on how to fix the B1451 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1451 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1451 Buick — Accessory Power Circuit
B1451 Cadillac — Accessory Power Circuit
B1451 Chevrolet — Accessory Power Circuit
B1451 Ford — Wiper Wash/Delay Switch Circuit Open
B1451 GMC — Accessory Power Circuit
B1451 Lexus — Compressor Solenoid Circuit
B1451 Lincoln — Wiper Wash/Delay Switch Circuit Open
B1451 Mercury — Wiper Wash/Delay Switch Circuit Open
B1451 Scion — Compressor Solenoid Circuit
B1451 Toyota — Compressor Solenoid Circuit

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 B1451 Code

1. What are the common symptoms of OBDII code B1451 (Wiper Wash/Delay Switch Circuit Open)?

- Common symptoms include the wiper washers not functioning, wipers operating at a single speed only, or the delay function not working as expected.

2. What can cause the OBDII code B1451 to be triggered?

- The code B1451 is typically triggered by a faulty wiper wash/delay switch, damaged wiring in the switch circuit, or a corroded connector.

3. How can I diagnose the issue causing OBDII code B1451?

- You can diagnose the issue by visually inspecting the wiper wash/delay switch and its wiring for any visible damage. Using a multimeter to test continuity in the circuit can also help pinpoint the problem.

4. Is it safe to continue driving with OBDII code B1451 active?

- While your vehicle may still be drivable with this code, it is recommended to address the issue promptly to ensure proper wiper functionality, especially in inclement weather conditions.

5. Can I repair OBDII code B1451 myself?

- Depending on your skill level, you may be able to repair this issue yourself by replacing the faulty wiper wash/delay switch or repairing any damaged wiring in the circuit. However, professional help is recommended if you are unsure.

6. Are there any temporary fixes for OBDII code B1451?

- Temporary fixes like resetting the trouble codes using an OBDII scanner may temporarily clear the code, but the underlying issue causing B1451 will need to be addressed for a permanent solution.

7. Will OBDII code B1451 cause my windshield wipers to stop working completely?

- While the wipers may still work at a single speed, the wiper wash function and delay feature may be affected by the issue causing code B1451. It's crucial to address the problem to ensure proper wiper functionality.

8. How much does it typically cost to repair OBDII code B1451?

- The cost of repairing OBDII code B1451 can vary depending on the extent of the issue and whether you choose to do the repair yourself or seek professional help. Costs may involve parts and labor expenses.

9. Can extreme weather conditions contribute to triggering OBDII code B1451?

- Extreme weather conditions, such as heavy rain or snow, can potentially exacerbate the symptoms associated with OBDII code B1451 if the wiper wash/delay switch or its wiring is already compromised.

10. How long does it usually take to repair OBDII code B1451?

- The repair time for OBDII code B1451 can vary depending on the complexity of the issue and your experience level. It may take anywhere from 30 minutes to a few hours to diagnose and fix the problem.