B2871 Lincoln Code - Left 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
- B2871 Lincoln indicates Left 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 B2871 Lincoln 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 B2871 Lincoln?
- 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 Left Rear Tire Pressure Sensor
How to Fix the DTC B2871 Lincoln?
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 B2871 Lincoln 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.
Need more information about the B2871 Lincoln code?
Need more information on how to fix the B2871 Lincoln code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B2871 Lincoln code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B2871 Lincoln Code
1. What does the OBDII code B2871 mean on a Lincoln?
The B2871 code indicates a fault with the left rear tire pressure sensor, meaning it is not transmitting data or functioning properly.
2. What are the common symptoms of the B2871 code?
Symptoms include a tire pressure warning light on the dashboard, incorrect or no tire pressure readings for the left rear tire, and possible warning messages.
3. What causes the B2871 code to appear?
The most common causes are a faulty left rear tire pressure sensor, a dead sensor battery, or wiring/communication issues between the sensor and the vehicle’s TPMS module.
4. How can I fix the B2871 code on my Lincoln?
You may need to replace the left rear tire pressure sensor, reprogram or relearn the sensor, or repair any damaged wiring or connectors in the TPMS system.
5. Can I drive my Lincoln with the B2871 code active?
Yes, but it’s not recommended for long periods, as you won’t receive accurate tire pressure readings, which could lead to unsafe driving conditions.
6. How do I know if the left rear tire pressure sensor needs replacement?
If the sensor battery is dead, it cannot be reprogrammed, or it fails diagnostic testing, it likely needs replacement.
7. How much does it cost to fix the B2871 code?
Replacing a tire pressure sensor typically costs between $50 and $250, depending on parts and labor.
8. Can I reset the B2871 code without replacing the sensor?
You can attempt to clear the code using an OBDII scanner, but if the issue persists, the sensor or related components likely need repair.
9. How long does a tire pressure sensor last?
Most tire pressure sensors last 5-10 years, depending on usage and environmental factors.
10. Do I need special tools to fix the B2871 code?
Yes, you may need a TPMS programming tool and an OBDII scanner to diagnose and reprogram the system after repairs.
Discuss the causes and fixes for B2871 Lincoln OBDII Code
Code B2871 Lincoln comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
