B3922 Buick Code - Front Wiper Function Select Circuit
Quick Answer
The Body Control Module (BCM) monitors the windshield wiper switch low signal circuit. Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction 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
- B3922 Buick indicates Front Wiper Function Select Circuit.
- Common causes
- Common causes include Faulty Turn Signal/Multifunction Switch, Turn Signal/Multifunction Switch harness is open or shorted, Turn Signal/Multifunction 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.
Code B3922 Buick Description
What are the Possible Causes of the DTC B3922 Buick?
- Faulty Turn Signal/Multifunction Switch
- Turn Signal/Multifunction Switch harness is open or shorted
- Turn Signal/Multifunction Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B3922 Buick?
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 B3922 Buick 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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Frequently Asked Questions about B3922 Buick Code
1. What does the OBDII code B3922 mean for a Buick?
B3922 indicates an issue with the Front Wiper Function Select Circuit, which affects the operation of the windshield wipers.
2. What are common symptoms of the B3922 code?
Symptoms may include wipers not functioning, operating only on certain speeds, or failing to respond to the wiper switch.
3. What causes the B3922 code to appear?
Common causes include a faulty wiper switch, damaged wiring or connectors, or a malfunctioning wiper motor.
4. Can I still drive my Buick with the B3922 code?
Yes, but driving without functional wipers can be unsafe in bad weather, so it’s important to address the issue promptly.
5. How do I diagnose the B3922 code?
Diagnosis involves inspecting the wiper switch, testing the circuit for continuity, and checking for signs of damaged wiring or loose connectors.
6. What tools are needed to troubleshoot the B3922 code?
You’ll need a multimeter to test the circuit, an OBDII scanner to confirm the code, and possibly a wiring diagram for reference.
7. How do I fix the B3922 code on my Buick?
Repairs may include replacing the wiper switch, repairing damaged wiring, or replacing the wiper motor if it’s faulty.
8. How much does it cost to repair a B3922 code?
Repair costs vary depending on the specific issue, but replacing a wiper switch typically costs $100–$300, including parts and labor.
9. Can a blown fuse cause the B3922 code?
It’s possible if the fuse connected to the wiper circuit is blown, so it’s worth checking during the diagnostic process.
10. Is the B3922 code specific to Buicks?
While it commonly appears on Buicks, other GM vehicles may also use this code for similar wiper circuit issues.
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