B3722 Saturn Code - Rear Wiper Relay Drive Circuit Low
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 of the Body Control Module (BCM) circuit. 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
- B3722 Saturn indicates Rear Wiper Relay Drive Circuit Low.
- 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.
Code B3722 Saturn Description
What are the Possible Causes of the DTC B3722 Saturn?
- 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 B3722 Saturn?
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 B3722 Saturn 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 B3722 Saturn Code
1. What are the common symptoms of OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low)?
The common symptoms include the rear wiper not functioning properly or not working at all.
2. What are the possible causes of the OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low)?
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 B3722 Saturn (Rear Wiper Relay Drive Circuit Low)?
You can use a diagnostic scanner to read the code and then inspect the rear wiper relay, wiring, and connectors for any visible damage or loose connections.
4. What are some repair tips for fixing OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low)?
Try replacing the rear wiper relay first, as it is a common culprit. If the issue persists, inspect the wiring and connectors for any damage and repair as necessary.
5. Can I reset the OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low) without fixing the underlying issue?
Resetting the code without fixing the issue will likely result in the code reappearing once the vehicle is driven and the problem is detected again.
6. How important is it to address OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low) promptly?
While the vehicle may still be drivable with this code, it is important to address it promptly to ensure the rear wiper functions correctly, especially in adverse weather conditions.
7. Is it safe to drive my vehicle with OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low) active?
It is generally safe to drive the vehicle with this code, but it is advisable to address the issue as soon as possible to avoid potential visibility issues in rainy or snowy conditions.
8. Can extreme weather conditions cause OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low) to trigger?
Yes, extreme weather conditions such as heavy rain, snow, or ice accumulation can sometimes exacerbate issues with the rear wiper relay circuit, leading to this code being triggered.
9. Are there any preventive measures to avoid encountering OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low)?
Regularly inspecting and maintaining the rear wiper system, including checking the relay, wiring, and motor, can help prevent issues that may trigger this code.
10. Should I attempt to fix OBDII code B3722 Saturn (Rear Wiper Relay Drive Circuit Low) myself, or seek professional help?
If you are familiar with automotive electrical systems and have the necessary tools, you can attempt to diagnose and fix the issue yourself. However, if you are unsure or inexperienced, it is best to seek the help of a professional mechanic.
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