AutoCodes – Generic – B1477

B1477 Code - Wiper Hi/Low Circuit Motor Short To Ground

Quick Answer

The Body Control Module (BCM) monitors the Wiper Hi/Low Circuit Motor. Common causes include Faulty Wiper Hi/Low Circuit Motor, Wiper Hi/Low Circuit Motor harness is open or shorted, Wiper Hi/Low Circuit Motor 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: B1477 indicates Wiper Hi/Low Circuit Motor Short To Ground.
Common causes: Common causes include Faulty Wiper Hi/Low Circuit Motor, Wiper Hi/Low Circuit Motor harness is open or shorted, Wiper Hi/Low Circuit Motor 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 17,142

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 B1477 Description

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

OBDII Code B1477 - Wiper Hi/Low Circuit Motor Short To Ground - AutoCodes.com — B1477 Code - Wiper Hi/Low Circuit Motor Short To Ground

What does this mean?

What are the Possible Causes of the DTC B1477?

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

How to Fix the DTC B1477?

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 B1477 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 B1477 code?

Need more information on how to fix the B1477 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1477 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1477 Chrysler — Channel 5 Audio Speaker Output Circuit Open
B1477 Dodge — Channel 5 Audio Speaker Output Circuit Open
B1477 Hyundai — Passenger Curtain Airbag Resistance Too High
B1477 Jeep — Channel 5 Audio Speaker Output Circuit Open
B1477 KIA — Passenger Curtain Airbag Resistance Too High
B1477 Lexus — A/C Inverter Low Voltage Power Resource System Malfunction
B1477 RAM — Channel 5 Audio Speaker Output Circuit Open
B1477 Toyota — A/C Inverter Low Voltage Power Resource System Malfunction

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 B1477 Code

1. What are common symptoms of OBDII code B1477 (Wiper Hi/Low Circuit Motor Short To Ground)?

- Common symptoms include non-functioning wipers, wipers operating only at one speed, or wipers not turning off.

2. What are the possible causes of OBDII code B1477?

- Potential causes include a short to ground in the wiper motor circuit, damaged wiring or connectors, or a faulty wiper motor.

3. How can I diagnose OBDII code B1477?

- Diagnose this code by inspecting the wiper motor wiring, checking for shorts to ground, testing the wiper motor operation, and using a multimeter to check for continuity.

4. Can a blown fuse cause OBDII code B1477 to appear?

- Yes, a blown fuse in the wiper circuit can lead to OBDII code B1477 being triggered due to a loss of power or short to ground.

5. What is the typical repair process for OBDII code B1477?

- The repair process usually involves locating and repairing the short to ground in the wiper motor circuit, replacing damaged wiring, connectors, or the wiper motor if necessary.

6. Are there any DIY tips for addressing OBDII code B1477?

- DIY tips include checking fuses, inspecting wiring for visible damage, ensuring proper grounding of the wiper motor, and following a systematic approach to diagnose the issue.

7. Can moisture or water ingress cause OBDII code B1477 to occur?

- Yes, moisture or water ingress in the wiper motor circuit can lead to shorts to ground, triggering OBDII code B1477.

8. Is it safe to continue driving with OBDII code B1477 present?

- It is not recommended to drive with OBDII code B1477 active, as it can result in unpredictable wiper operation which may compromise visibility during adverse weather conditions.

9. How does OBDII code B1477 affect vehicle safety?

- OBDII code B1477 affects vehicle safety by potentially causing erratic wiper operation, leading to reduced visibility while driving in rainy or snowy conditions.

10. Can resetting the OBDII system clear code B1477 permanently?

- Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing code B1477 is not addressed, the code is likely to reappear.