B316B Code - Driver Window Switch
Quick Answer
The driver and passenger window motors supply 12 V signal circuits to their respective window switches, when a window switch has been activated, a switch closes providing a ground to the appropriate signal circuit causing the voltage to drop to 0 V. Common causes include Faulty Driver Window Switch, Driver Window Switch harness is open or shorted, Driver Window 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
- B316B indicates Driver Window Switch.
- Common causes
- Common causes include Faulty Driver Window Switch, Driver Window Switch harness is open or shorted, Driver Window 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 B316B Description
The driver window master control switch also contains control switches for the passenger, left rear, and right rear window functions. When a window switch is pressed, a serial data message is sent to the Body Control Module (BCM). The BCM examines the request and checks for messages from other power window motors that may prohibit window movement. If no prohibitive messages have been received, the BCM will send a serial data message to the passenger window motor or to the appropriate rear window switch which will perform the command as requested.
What are the Possible Causes of the DTC B316B?
- Faulty Driver Window Switch
- Driver Window Switch harness is open or shorted
- Driver Window Switch circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B316B?
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 B316B 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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Information for Specific Makes
- B316B Buick — Driver Window Switch
- B316B Cadillac — Driver Window Switch
- B316B Chevrolet — Driver Window Switch
- B316B GMC — Driver Window Switch
Frequently Asked Questions about B316B Code
1. What does OBDII code B316B mean?
The B316B code indicates a problem with the driver window switch, typically related to its electrical circuit or functionality.
2. What are the symptoms of code B316B?
Common symptoms include the driver’s window not responding to switch commands, intermittent operation, or inability to fully open or close the window.
3. What causes the B316B code to appear?
The code can be triggered by a faulty driver window switch, damaged wiring, a blown fuse, or a malfunction in the window motor.
4. How do I diagnose the B316B code?
Start by inspecting the window switch and its wiring for damage, check the fuse for the power window system, and test the continuity of the circuit with a multimeter.
5. Can I still drive my car with the B316B code active?
Yes, you can drive your car, but the functionality of the driver’s window may be limited, which could be inconvenient or a safety concern.
6. How can I fix the B316B code?
Repairs may involve replacing the driver window switch, repairing or replacing damaged wiring, or replacing the window motor if necessary.
7. How much does it cost to fix a B316B code?
The cost depends on the specific repair needed. Replacing a driver window switch typically costs between $100 and $300, including parts and labor.
8. Can a dirty or corroded connection cause the B316B code?
Yes, a dirty or corroded connection in the window switch circuit can disrupt the electrical signal and trigger the code.
9. Can I clear the B316B code without repairing the issue?
You can clear the code with an OBDII scanner, but if the underlying issue isn’t resolved, the code will likely reappear.
10. Does the B316B code affect other windows in the car?
This code specifically relates to the driver window switch, so it typically doesn’t affect the operation of other windows.
Discuss the causes and fixes for B316B OBDII Code
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