B2870 Ford Code - Right Rear Tire Pressure Sensor Fault
Quick Answer
The Tire Pressure Monitor (TPM) system monitors the air pressure in the 4 road tires with wheel-mounted tire pressure sensors. Common causes include Low tire pressure, Tire pressure sensor is missing or damaged, Spare tire is installed as a road wheel. 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
- B2870 Ford indicates Right Rear Tire Pressure Sensor Fault.
- Common causes
- Common causes include Low tire pressure, Tire pressure sensor is missing or damaged, Spare tire is installed as a road wheel.
- 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 B2870 Ford Description
Each tire pressure sensor transmission is compared against a low-pressure limit (pressure listed on vehicle certification label minus 25 percent, which will be about 6-9 psi). If it is determined that the tire pressure has fallen below this limit, the SJB sends a message to the instrument cluster, which then illuminates the low pressure warning indicator and displays the appropriate message(s) in the message center (if equipped).
What are the Possible Causes of the DTC B2870 Ford?
- Low tire pressure
- Tire pressure sensor is missing or damaged
- Spare tire is installed as a road wheel
- Incorrect tire pressure sensor is installed
- Tire pressure sensor installed incorrectly
- Faulty Right Rear Tire Pressure Sensor
How to Fix the DTC B2870 Ford?
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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B2870 Ford 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 B2870 Ford Code
1. What are the common symptoms of OBDII code B2870 Ford (Right Rear Tire Pressure Sensor Fault)?
The common symptoms include the TPMS warning light illuminating on the dashboard and a message indicating a fault with the right rear tire pressure sensor.
2. What are the possible causes of OBDII code B2870 Ford?
Possible causes include a malfunctioning right rear tire pressure sensor, faulty wiring or connections related to the sensor, low tire pressure, or sensor battery issues.
3. How can I diagnose the Right Rear Tire Pressure Sensor Fault (B2870) in a Ford vehicle?
You can diagnose the issue by using a TPMS diagnostic tool to read the specific error code, checking the right rear tire for proper inflation, and inspecting the sensor and its connections for any visible damage.
4. Is it safe to continue driving with the B2870 OBDII code triggered?
While it is generally safe to drive with the code triggered, it is important to address the issue promptly to ensure accurate tire pressure monitoring and safe driving conditions.
5. Can I reset the B2870 code in a Ford vehicle without fixing the underlying issue?
Resetting the code without addressing the root cause, such as a faulty sensor or wiring problem, may result in the code reappearing and the TPMS system not functioning properly.
6. How can I repair the Right Rear Tire Pressure Sensor Fault (B2870) in my Ford vehicle?
Repair options include replacing the right rear tire pressure sensor, repairing or replacing damaged wiring or connections, ensuring proper tire inflation, and resetting the TPMS system.
7. Are there any DIY tips for troubleshooting the B2870 code in a Ford vehicle?
DIY tips include checking the tire pressure in the right rear tire, inspecting the sensor and its connections for damage, and using a TPMS diagnostic tool to reset the system after any repairs.
8. Can extreme weather conditions affect the triggering of the B2870 code?
Extreme cold or hot weather conditions can potentially impact tire pressure readings and trigger the B2870 code, so it's important to monitor tire pressure regularly, especially in such conditions.
9. How much does it typically cost to repair the Right Rear Tire Pressure Sensor Fault (B2870) at a dealership or mechanic?
The cost of repair can vary depending on the specific issue, but it may involve parts and labor costs for sensor replacement, wiring repairs, or system diagnostics.
10. Is the B2870 Ford OBDII code specific to certain Ford vehicle models?
The B2870 code may be specific to certain Ford models that are equipped with a TPMS system and right rear tire pressure sensor, so it's essential to consult the vehicle's manual or a professional for accurate information.
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