B251F Hyundai Code - High Mounted Stop Lamp Circuit Short to Ground
Quick Answer
The B251F code is a diagnostic trouble code (DTC) that indicates a short-to-ground condition in the high mounted stop lamp circuit, commonly referred to as the center or third brake light. Common causes include Faulty High Mounted Stop Lamp AssemblyHigh Mounted Stop Lamp harness is open or shortedPoor electrical connection in the High Mounted Stop Lamp circuitCorrosion or damage to connectors associated with the brake light circuitMoisture intrusion leading to electrical shorts. 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
- B251F Hyundai indicates High Mounted Stop Lamp Circuit Short to Ground.
- Common causes
- Common causes include Faulty High Mounted Stop Lamp AssemblyHigh Mounted Stop Lamp harness is open or shortedPoor electrical connection in the High Mounted Stop Lamp circuitCorrosion or damage to connectors associated with the brake light circuitMoisture intrusion leading to electrical shorts.
- 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 B251F Hyundai Description
The B251F code is a diagnostic trouble code (DTC) that indicates a short-to-ground condition in the high mounted stop lamp circuit, commonly referred to as the center or third brake light. This circuit is monitored by the Integrated Control Unit (ICU), which is responsible for ensuring that the brake lights function correctly. When the ICU detects a short circuit, it triggers this code, indicating that there is an excessive current flow or a direct electrical path to ground within the circuit. This can lead to the high mounted stop lamp either failing to illuminate or operating intermittently, which poses a safety risk as it may not signal braking to vehicles behind you.
Common Causes of B251F Hyundai
- Faulty High Mounted Stop Lamp Assembly
- High Mounted Stop Lamp harness is open or shorted
- Poor electrical connection in the High Mounted Stop Lamp circuit
- Corrosion or damage to connectors associated with the brake light circuit
- Moisture intrusion leading to electrical shorts
Symptoms of B251F Hyundai
- Engine Light ON (or Service Engine Soon Warning Light)
- High mounted stop lamp not illuminating or flickering
- Brake lights functioning intermittently
- Increased current draw detected by the ICU
- Potential additional DTCs related to electrical faults
How to Fix B251F Hyundai
- Perform a visual inspection of the high mounted stop lamp assembly for any physical damage or corrosion.
- Check the wiring harness for signs of wear, pinching, or exposed wires that may cause a short to ground.
- Test the electrical connectors for continuity and ensure they are free from corrosion or moisture.
- If necessary, replace the high mounted stop lamp assembly or repair the wiring harness as needed.
- Clear the DTC and perform a test drive to ensure the high mounted stop lamp operates correctly and the code does not return.
Cost to Fix B251F Hyundai
The cost to diagnose and repair the B251F code typically ranges from $100 to $400, depending on the specific issue identified. Parts such as a new high mounted stop lamp assembly can range from $50 to $150, while labor costs can vary significantly based on location and shop rates, generally falling between $80 and $150 per hour. Dealerships may charge higher rates, while independent shops may offer more competitive pricing.
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