B1971 Buick Code - Inadvertent Power Fault
Quick Answer
If interior lights are accidentally left on, a Delayed Interior Lighting (DIL) feature provides automatic shutoff. Common causes include Faulty Inadvertent Power Relay, Inadvertent Power Relay harness is open or shorted, Inadvertent Power 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
- B1971 Buick indicates Inadvertent Power Fault.
- Common causes
- Common causes include Faulty Inadvertent Power Relay, Inadvertent Power Relay harness is open or shorted, Inadvertent Power 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 B1971 Buick Description
- A door is opened or closed, or driver door unlock message is received.
- The trunk is opened or closed.
- Interior lights are turned on. When DIL relay is energized, power is supplied to interior lights and high side of the interior light relay coil.
The BCM continuously monitors output to DIL relay. The Diagnostic Trouble Code (DTC) B1971 will set when output is commanded on or off, and short or open is detected for at least 2 seconds. When DTC B1971 is set, BCM will continue to command the requested state of relay until it is achieved or no longer necessary. DTC B1971 will clear when conditions for fault no longer exist or when scan tool is used. A history DTC will clear after 50 consecutive ignition cycles if conditions for fault no longer exist.
What are the Possible Causes of the DTC B1971 Buick?
- Faulty Inadvertent Power Relay
- Inadvertent Power Relay harness is open or shorted
- Inadvertent Power Relay circuit poor electrical connection
How to Fix the DTC B1971 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 B1971 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 B1971 Buick Code
1. What are the common symptoms of OBDII code B1971 in a Buick related to an inadvertent power fault?
The common symptoms include intermittent or permanent loss of power to various vehicle components, such as lights, radio, or other electrical systems.
2. What are the possible causes of the B1971 code indicating an inadvertent power fault in a Buick?
The code B1971 can be triggered by issues such as a faulty power supply relay, damaged wiring harness, or a malfunctioning control module.
3. How can I diagnose the source of the inadvertent power fault causing the B1971 code in my Buick?
To diagnose the issue, you may need to perform a thorough inspection of the power supply circuit, check for loose connections, test the relay, and use a multimeter to measure voltage levels.
4. Can a DIY enthusiast repair the inadvertent power fault related to the B1971 code in a Buick?
Repairing the inadvertent power fault may require advanced electrical knowledge and tools. If you are confident in your skills, you can attempt the repair; otherwise, it's recommended to seek professional assistance.
5. Is it safe to continue driving my Buick with the B1971 code indicating an inadvertent power fault?
It is not recommended to drive the vehicle with the B1971 code active, as it can lead to unpredictable power disruptions that may affect the operation of critical vehicle systems.
6. How much does it typically cost to repair the inadvertent power fault causing the B1971 code in a Buick?
The cost of repairing the inadvertent power fault can vary depending on the specific issue, parts needed, and labor costs. It is advisable to get a few quotes from reputable mechanics.
7. Are there any preventive measures to avoid triggering the B1971 code related to an inadvertent power fault in a Buick?
Regularly inspecting the electrical components, ensuring proper wiring connections, and addressing any power-related issues promptly can help prevent the occurrence of the B1971 code.
8. Can extreme weather conditions contribute to the inadvertent power fault causing the B1971 code in a Buick?
Yes, extreme temperatures or moisture can potentially exacerbate electrical issues in a vehicle, leading to inadvertent power faults that trigger the B1971 trouble code.
9. Will resetting the OBDII system clear the B1971 code associated with an inadvertent power fault in a Buick?
Resetting the OBDII system may temporarily clear the code, but it will likely return if the underlying issue causing the inadvertent power fault is not addressed.
10. How urgent is it to address the B1971 code indicating an inadvertent power fault in a Buick?
It is recommended to address the B1971 code promptly to prevent potential safety hazards and further damage to the vehicle's electrical system.
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