B2625 Buick Code - Display Dimming Pulse Width Modulation Output Circuit
Quick Answer
The Body Control Module (BCM) receives a variable voltage signal from the Instrument Panel (I/P) dimmer switch requesting to illuminate the dimming lamps to a desired intensity. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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
- B2625 Buick indicates Display Dimming Pulse Width Modulation Output Circuit.
- Common causes
- Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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 B2625 Buick Description
Voltage for the LED dimming supply circuit, instrument panel lamps dimming control circuit, and the instrument panel lamps dimming supply voltage circuit is from the TBC 2 A fuse in the I/P fuse block directly through the BCM to these circuits.
What are the Possible Causes of the DTC B2625 Buick?
- Faulty Body Control Module (BCM)
- Body Control Module (BCM) harness is open or shorted
- Body Control Module (BCM) circuit poor electrical connection
How to Fix the DTC B2625 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 B2625 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 B2625 Buick Code
1. What does OBDII code B2625 mean on a Buick?
Code B2625 indicates an issue with the Display Dimming Pulse Width Modulation (PWM) Output Circuit, which controls the brightness of interior displays.
2. What are the common symptoms of code B2625 in a Buick?
Symptoms include dim or non-functional dashboard displays, flickering lights, or inability to adjust display brightness.
3. What causes code B2625 to appear?
Possible causes include a faulty dimmer switch, bad wiring or connections in the PWM circuit, a malfunctioning body control module (BCM), or a short or open circuit.
4. Can I still drive my Buick with code B2625?
Yes, this code typically does not affect drivability, but the dimming feature of the displays may not function properly.
5. How can I diagnose code B2625 in my Buick?
Check the dimmer switch functionality, inspect wiring and connections in the PWM circuit, and use a scan tool to monitor BCM activity and related signals.
6. What is the most common fix for code B2625?
The most common fix is repairing or replacing the dimmer switch or addressing loose or damaged wiring in the PWM circuit.
7. How much does it cost to repair code B2625 in a Buick?
Repair costs vary but may range from $100 to $300, depending on whether the dimmer switch, wiring, or BCM needs repair or replacement.
8. Can a weak battery trigger code B2625 in a Buick?
Yes, a weak or failing battery can cause voltage irregularities, potentially triggering this code.
9. Do I need to replace the BCM to fix code B2625?
Not always. The BCM is rarely the root cause. Diagnose other components like the dimmer switch and wiring before replacing the BCM.
10. Can I clear code B2625 without fixing the issue?
Clearing the code without addressing the root cause may temporarily turn off the warning, but the issue is likely to return.
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