AutoCodes – Generic – B1434

B1434 Code - Wiper Hi/Low Speed Relay Coil Circuit Failure

Quick Answer

The Body Control Module (BCM) monitors the Wiper Hi/Low Speed Relay Coil. Common causes include Faulty Wiper Hi/Low Speed Relay Coil, Wiper Hi/Low Speed Relay Coil harness is open or shorted, Wiper Hi/Low Speed Relay Coil 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: B1434 indicates Wiper Hi/Low Speed Relay Coil Circuit Failure.
Common causes: Common causes include Faulty Wiper Hi/Low Speed Relay Coil, Wiper Hi/Low Speed Relay Coil harness is open or shorted, Wiper Hi/Low Speed Relay Coil 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 7,258

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 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1434 Description

The Body Control Module (BCM) monitors the Wiper Hi/Low Speed Relay Coil. The BCM sets the OBDII code when the Wiper Hi/Low Speed Relay Coil is not to factory specifications.

OBDII Code B1434 - Wiper Hi/Low Speed Relay Coil Circuit Failure - AutoCodes.com — B1434 Code - Wiper Hi/Low Speed Relay Coil Circuit Failure

What does this mean?

What are the Possible Causes of the DTC B1434?

Faulty Wiper Hi/Low Speed Relay Coil
Wiper Hi/Low Speed Relay Coil harness is open or shorted
Wiper Hi/Low Speed Relay Coil circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1434?

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 B1434 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 B1434 code?

Need more information on how to fix the B1434 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1434 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1434 Ford — Wiper Hi/Low Speed Relay Coil Circuit Failure
B1434 Lincoln — Wiper Hi/Low Speed Relay Coil Circuit Failure
B1434 Mercury — Wiper Hi/Low Speed Relay Coil Circuit Failure

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 B1434 Code

1. What are the common symptoms of OBDII code B1434 (Wiper Hi/Low Speed Relay Coil Circuit Failure)?

- Common symptoms include non-functioning wiper high or low speed settings, wipers only working on one speed, or wipers not turning off.

2. What are the possible causes of OBDII code B1434?

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

3. How can I diagnose the Wiper Hi/Low Speed Relay Coil Circuit Failure?

- Use a scan tool to read the OBDII code B1434, then inspect the wiper relay, wiring, and connectors for any visible damage or corrosion.

4. Can a DIY enthusiast repair OBDII code B1434 at home?

- Repairing this code at home is possible for those with experience in automotive electrical systems. It may involve replacing the wiper relay or repairing damaged wiring.

5. Is it safe to continue driving with OBDII code B1434 active?

- It is not recommended to drive with this code active, as it may lead to unpredictable wiper behavior, compromising visibility in adverse weather conditions.

6. What are the repair options for OBDII code B1434 if I'm not comfortable doing it myself?

- You can take your vehicle to a trusted mechanic or dealership to diagnose and repair the issue related to the Wiper Hi/Low Speed Relay Coil Circuit Failure.

7. Are there any preventive maintenance tips to avoid OBDII code B1434 in the future?

- Regularly inspecting the wiper system, checking for any signs of wear or damage, and promptly addressing any issues can help prevent the occurrence of this code.

8. Can extreme weather conditions contribute to triggering OBDII code B1434?

- Yes, extreme weather conditions such as heavy rain, snow, or ice can put additional strain on the wiper system components, potentially leading to failures like the Wiper Hi/Low Speed Relay Coil Circuit Failure.

9. How long does it typically take to repair OBDII code B1434?

- The repair time can vary depending on the exact cause of the issue. Simple fixes like replacing a relay may take less than an hour, while more complex wiring repairs could take longer.

10. Does OBDII code B1434 affect the overall performance of the vehicle?

- While this code specifically relates to the wiper system, it can indirectly impact driving safety by affecting visibility, especially during inclement weather conditions.