B3884:02 Code - Center High Mounted Stop Lamp Circuit Short to Ground
Quick Answer
The B3884:02 diagnostic trouble code (DTC) indicates that there is a short to ground in the center high mounted stop lamp circuit of the vehicle. Common causes include Damaged wiring harness leading to the third brake light, Faulty brake light switch, Malfunctioning lamp assembly. 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
- B3884:02 indicates Center High Mounted Stop Lamp Circuit Short to Ground.
- Common causes
- Common causes include Damaged wiring harness leading to the third brake light, Faulty brake light switch, Malfunctioning lamp assembly.
- 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.
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Code B3884:02 Description
The B3884:02 diagnostic trouble code (DTC) indicates that there is a short to ground in the center high mounted stop lamp circuit of the vehicle. The center high mounted stop lamp, also known as the third brake light, is a crucial safety feature that alerts drivers behind you when you are braking. A short to ground in this circuit can prevent the third brake light from functioning properly, potentially reducing visibility and increasing the risk of rear-end collisions.
Common Causes of B3884:02
- Damaged wiring harness leading to the third brake light
- Faulty brake light switch
- Malfunctioning lamp assembly
- Issue with the body control module
- Corrosion or poor connections in the circuit
Symptoms of B3884:02
- Third brake light not illuminating when braking
- Dashboard warning light indicating a brake light malfunction
- Fuse for the center high mounted stop lamp blowing repeatedly
- Other brake lights functioning normally while the third brake light remains inactive
How to Fix B3884:02
- Begin by visually inspecting the wiring harness leading to the third brake light for any signs of damage or wear. Replace any damaged wires or connectors.
- Test the brake light switch to ensure it is functioning correctly. Replace the switch if necessary.
- Check the lamp assembly for any defects or malfunctions. Replace the lamp assembly if it is not working properly.
- Inspect the body control module for any signs of damage or malfunction. If needed, reprogram or replace the module.
- Clear the DTC from the vehicle's memory using a diagnostic scan tool after completing the repairs.
Cost to Fix B3884:02
The cost of repairing a center high mounted stop lamp circuit short to ground can vary depending on the specific cause of the issue and the labor rates in your area. In general, you can expect to pay anywhere from $100 to $300 for parts and labor. Keep in mind that diagnostic time and labor rates at auto repair shops can fluctuate, so it's advisable to obtain quotes from multiple sources to ensure you are getting a fair price.
Tech Notes for B3884:02
B3884:02 Center High Mounted Stop Lamp Circuit Short to Ground
B3884:04 Center High Mounted Stop Lamp Circuit Open
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