B2654 Cadillac Code - Courtesy Lamp Low Control Circuit Low
Quick Answer
The Body Control Module (BCM) controls the Courtesy Lamps through the courtesy lamp low control circuit. Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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
- B2654 Cadillac indicates Courtesy Lamp Low Control Circuit Low.
- Common causes
- Common causes include Faulty Courtesy Lamp, Courtesy Lamp harness is open or shorted, Courtesy Lamp 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 B2654 Cadillac Description
What are the Possible Causes of the DTC B2654 Cadillac?
- Faulty Courtesy Lamp
- Courtesy Lamp harness is open or shorted
- Courtesy Lamp circuit poor electrical connection
- Faulty Body Control Module (BCM)
How to Fix the DTC B2654 Cadillac?
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 B2654 Cadillac 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 B2654 Cadillac Code
1. What does OBDII code B2654 mean on a Cadillac?
Code B2654 indicates a problem with the Courtesy Lamp Low Control Circuit, specifically that the circuit voltage is lower than expected.
2. What are the common symptoms of code B2654 in a Cadillac?
Common symptoms include malfunctioning courtesy lights, dim or flickering interior lights, or lights that fail to turn on.
3. What causes the B2654 code to appear on a Cadillac?
Typical causes include a faulty courtesy light bulb, a damaged wire in the circuit, a defective light control module, or poor electrical connections.
4. Can a blown fuse trigger the B2654 code on a Cadillac?
Yes, a blown fuse in the lighting circuit can cause the code by interrupting the power flow to the courtesy lights.
5. How can I diagnose code B2654 on my Cadillac?
Start by inspecting the courtesy light bulbs, wiring, and connectors for damage or corrosion. Check the relevant fuse and test the light control module for proper function.
6. Is it safe to drive a Cadillac with code B2654?
Yes, it’s usually safe to drive, but the courtesy lights may not function properly, which could be inconvenient or unsafe in low-light situations.
7. How do I fix code B2654 on a Cadillac?
Repairs may include replacing a faulty bulb, repairing damaged wiring, cleaning corroded connectors, or replacing the light control module if it’s defective.
8. How much does it cost to fix code B2654 on a Cadillac?
The cost depends on the specific issue. Replacing a bulb or fixing wiring may cost $50–$100, while replacing a light control module could cost $200–$500, including labor.
9. Can a dead battery cause the B2654 code on a Cadillac?
While unlikely, a weak or dead battery can cause voltage-related issues that might trigger this code. Check the battery and charging system to rule this out.
10. Will clearing the code B2654 fix the issue permanently?
Clearing the code will reset it temporarily, but if the underlying cause is not resolved, the code will likely return.
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