B1251 Code - Tire Pressure Sensor Low Battery No Sub Type Information
Quick Answer
The Body Control Module (BCM) monitors the Tire Pressure Sensor. Common causes include Faulty Tire Pressure Sensor, Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted. Severity is Moderate - service should be scheduled soon. The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
- What it means
- B1251 indicates Tire Pressure Sensor Low Battery No Sub Type Information.
- Common causes
- Common causes include Faulty Tire Pressure Sensor, Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted.
- Severity
- Moderate - service should be scheduled soon.
- Can I drive?
- The vehicle may still be drivable for short trips if it runs normally, but avoid hard driving and repair it soon.
Code B1251 Description
What are the Possible Causes of the DTC B1251?
- Faulty Tire Pressure Sensor
- 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 B1251?
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 B1251 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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Information for Specific Makes
- B1251 Ford — Tire Pressure Sensor Low Battery No Sub Type Information
- B1251 Lincoln — Tire Pressure Sensor Low Battery No Sub Type Information
- B1251 Mercury — Tire Pressure Sensor Low Battery No Sub Type Information
Frequently Asked Questions about B1251 Code
1. What does the OBDII code B1251 mean?
The B1251 code indicates that a tire pressure sensor has a low battery, and the system is unable to provide additional subtype information.
2. What are the symptoms of the B1251 code?
Common symptoms include a tire pressure monitoring system (TPMS) warning light on the dashboard and potentially inaccurate or no tire pressure readings.
3. What causes the B1251 code to appear?
The most common cause is a low or depleted battery in one or more tire pressure sensors.
4. Can I still drive with a B1251 code?
Yes, you can drive with this code, but you may not receive accurate tire pressure alerts, which can compromise safety if a tire becomes underinflated.
5. How do I fix the B1251 code?
The tire pressure sensor with the low battery needs to be replaced. After replacement, the system may require reprogramming or recalibration.
6. How long do tire pressure sensor batteries typically last?
Tire pressure sensor batteries usually last 5-10 years, depending on driving conditions and usage.
7. How much does it cost to replace a tire pressure sensor?
The cost to replace a tire pressure sensor typically ranges from $50 to $150 per sensor, including parts and labor.
8. Can I replace a low-battery tire pressure sensor myself?
While it’s possible to replace a sensor yourself, it requires removing the tire and reprogramming the system. Many people prefer to have a professional handle it.
9. Will resetting the TPMS clear the B1251 code?
Resetting the TPMS may temporarily clear the code, but it won’t fix the underlying problem of the low sensor battery.
10. How can I prevent the B1251 code from recurring?
Regularly inspect your tire pressure sensors during routine maintenance and replace them when their batteries are nearing the end of their lifespan.
Discuss the causes and fixes for B1251 OBDII Code
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