Tire pressure monitor fault

Unhook batt for tenmin or a partstore cudclearit

Doesn't have a CJB , has SJB - smart junction box . Computer with fuse box in one .
Removal
NOTE: Prior to removal of the SJB, it is necessary to upload module configuration information to a scan tool.
NOTE: The tire pressure monitoring system (TPMS) functionality is integral to the SJB.
NOTE: A new SJB module is delivered in manufacturing mode with pre-set DTCs. These DTCs require that the TPMS sensor training procedure be carried out in order for the DTCs to be cleared. The pre-set DTCs are as follows:

• B2868 - Left Front Tire Pressure Sensor Fault
• B2869 - Right Front Tire Pressure Sensor Fault
• B2870 - Right Rear Tire Pressure Sensor Fault
• B2871 - Left Rear Tire Pressure Sensor Fault
• C2780 - ECU in Manufacturer Sub-State

1. Upload the module configuration information from the SJB. For additional information, refer to Section 418-01 .

1. Disconnect the battery. For additional information, refer to Section 414-01 .

1. Remove the floor console SJB cover.

1. Remove the transmission selector lever bezel from the floor console finish panel.

1. Apply the parking brake.

1. Remove the parking brake lever boot from the floor console finish panel.

1. Remove the floor console finish panel.

1. Remove the SJB screw.

1. Disconnect the electrical connectors and remove the SJB.

The "tire pressure sensor fault" message is an indication that there is a problem with the tire pressure monitoring system (TPMS). A tire pressure monitoring system is required for all motor vehicles manufactured after 2007. The pressurized air inside the tire is monitored by the TPMS. The TPMS consists of tire pressure sensors which are placed inside each wheel. These sensors provide the driver with information regarding the actual tire pressure of each tire in real time.
All car tires are tubeless, unlike bike tires that have an inner tube that when filled with air inflates the rubber tire. Tubeless car tires have an inner core that is filled with pressurized air. The tire should be filled based on the manufacturer's specified PSI. This can usually be found on a sticker on the driver's side door or trunk. If the tire is overinflated or underinflated, this could cause damage to the tire and/or hazardous driving conditions.
Problems that are possible when a tire is overinflated:

• Shorter lifespan of the tire
• Broken tire belt
• Uneven wear on the tread
• Bad traction-specifically in the rain and snow
• Difficult to steer and/or maneuver (it may feel as if you are driving on ice)
• Decreased friction
• Driver may experience a harsh ride
• Could cause damage to the suspension
• Tire may blowout/explode

Problems that are possible when a tire is underinflated:

• Shorter lifespan of the tire
• Make cause the tread to separate
• Premature wear on the tread
• Decreased fuel economy
• Difficult to steer and/or maneuver (it may feel harder to turn with precision)
• Increased friction
• Tire may blowout/explode

That should be in your manual it should tell you how to reset it

Tire pressure sensors are just that, sensitive. If all your tire have the proper pressure and you still are seeing the sensor light and it comes back on after resetting it then the computer sensor monitor is at fault. Unless you can reset your cars' computer you will probably be stuck with going to the dealer for service. Call various other reputable service centers that have certified mechanics before turning out the big green at a FORD dealership though.

a tpms or tire pressure monitoring sensor only indicates when the pressure is below a certain psi. If a vehicle is pulling to a certain side on a level surface there could be several things at fault: low tire pressure, uneven wear on tires, or a problem in the suspension. If whoever performed the alignment knew what they were doing they should have advised you of any issues. Most service centers do a computerized alignment because they have no idea what camber or caster means so basically it's a waste of money unless a skilled tech tests/inspects the vehicle for themself

TIRE PRESSURE MONITOR SYSTEM
The Tire Pressure Monitor System (TPMS) uses radio and sensor technology to check tire pressure levels. If your vehicle has this feature, sensors are mounted on each tire and wheel assembly, except the spare tire. The TPMS sensors monitor the air pressure in your vehicle's tires and transmit tire pressure readings to a receiver located in the vehicle.

The TPMS is designed to alert the driver, if a low tire pressure condition exists. This system also allows the driver to check tire pressure levels using the Driver Information Center (DIC).

When a low tire pressure condition is detected, the TPMS displays the "CHECK TIRE PRESSURE" warning message on the DIC, and at the same time illuminates the low tire pressure warning symbol.

You may notice, during cooler weather conditions, that the tire pressure monitor light, located on the instrument panel cluster, and the "CHECK TIRE PRESSURE" message will appear when the vehicle is first started and then turn off as you start to drive the vehicle. This could be an early indicator that the tire pressures are getting low and need to be inflated to the proper pressure.

Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard or tire inflation pressure label. (If your vehicle has tires of a different size than the size indicated on the vehicle placard or tire inflation pressure label, you should determine the proper inflation pressure for those tires.)

As an added safety feature, your vehicle has been equipped with a tire pressure monitoring system (TPMS) that illuminates a low tire pressure telltale when one or more of your tires is significantly under-inflated.

Accordingly, when the low tire pressure telltale illuminates, you should stop and check your tires as soon as possible, and inflate them to the proper pressure. Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle's handling and stopping ability.

Please note that the TPMS is not a substitute for proper tire maintenance, and it is the driver's responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the TPMS low tire pressure telltale.

The "CHECK TIRE PRESSURE" warning message and low tire pressure light (telltale) will appear at each ignition cycle until the tires are inflated to the correct inflation pressure.

The Tire and Loading Information label (tire information placard) shows the size of your vehicle's original tires and the correct inflation pressure for your vehicle's tires when they are cold.

Your vehicle's TPMS can alert you about a low tire pressure condition but it does not replace normal tire maintenance.

NOTICE: Do not use a tire sealant if your vehicle has Tire Pressure Monitors. The liquid sealant can damage the tire pressure monitor sensors.

RESETTING THE TPMS IDENTIFICATION CODES
Each TPMS sensor has a unique identification code. Any time you rotate your vehicle's tires or replace one or more of the TPMS sensors, the identification codes will need to be matched to the new tire/wheel position. Each tire/wheel position is matched to a sensor, by increasing or decreasing the tire's air pressure. The sensors are matched to the tire/wheel positions in the following order: LF TIRE (left front tire on the driver's side of the vehicle), RF TIRE (right front tire on the passengers side of the vehicle), RR TIRE (right rear tire on the passengers side of the vehicle), and LR TIRE (left rear tire on the driver's side of the vehicle).

You will have one minute to match the first tire/wheel position, and five minutes overall to match all four tire/wheel positions. If it takes longer than one minute, to match the first tire and wheel, or more than five minutes to match all four tire and wheel positions the matching process stops and you will need to start over.

The TPMS sensor matching process is outlined below:

1. Set the parking brake.
2. Turn the ignition switch to "RUN" with the engine off.
3. Turn the headlamp switch from "OFF" to the parking lamps setting four times within three seconds. A double horn chirp will sound and the TPMS low tire warning light will begin to flash. The double horn chirp and flashing TPMS warning light indicate that the TPMS matching process has started. The TPMS warning light should continue flashing throughout the matching procedure. The "SERVICE TIRE MONITOR" message will be displayed on the Driver Information Center (DIC).
4. Start with the driver's side front tire.
5. Remove the valve cap from the valve cap stem. Activate the TPMS sensor by increasing or decreasing the tire's air pressure for 10 seconds, then stop and listen for a single horn chirp. The single horn chirp should sound within 15 seconds, confirming that the sensor identification code has been matched to this tire and wheel position. If you do not hear the confirming single horn chirp, you will need to start over with Step 1. To let air-pressure out of a tire you can use the pointed end of the valve cap, a pencil-style air pressure gage or a key.
6. Proceed to the passenger's side front tire, and repeat the procedure in Step 5.
7. Proceed to the passenger's side rear tire, and repeat the procedure in Step 5.
8. Proceed to the driver's side rear tire, and repeat the procedure in Step 5.
9. After hearing the confirming horn chirp for the left rear tire, check to see if the TPMS warning light is still flashing. If it is, turn the ignition switch to LOCK to exit the sensor matching process. If the TPMS warning light is not flashing, the five minute time limit has passed and you will need to start the process over beginning with Step 1.
10. Set all four tires to the recommended air pressure level as indicated on the Tire and Loading Information label.
11. Put the valve caps back on the valve stems. The spare tire does not have a TPMS sensor. If you replace one of the road tires with the spare, the "CHECK TIRE PRESSURE" message will be displayed on the DIC screen. This message should go off once you re-install the road tire containing the TPMS sensor. The "SERVICE TIRE MONITOR" message is displayed when the TPMS is malfunctioning. One or more missing or inoperable TPMS sensors will cause the service tire monitor message to be displayed.

tahoe 2007 tire press problem

2006 Ford Truck Explorer
NOTE: The tire pressure sensor training prcedure must be done in an area without radio frequency (RF) noise. RF noise is generated by electrical motor and appliance operation, cell phones, and remote transmitters.

1. Turn the ignition switch to the OFF position
2. Turn the ignition switch to the RUN position three times, ending in the RUN position. Do not wait more than two minutes between each key cycle.
3. Press and release the brake pedal
4. Turn the ignition switch to the OFF position.

Sequence:
1- Left Front Tire
2- Right Front Tire
3- Right Rear Tire
4- Left Rear Tire

5. Turn the ignition switch from the OFF position to the RUN position three times, ending in the RUN position. Do not wait for more than two minutes between each key cycle.
6. The horn will sound once and the TPMS indicator will flash if train mode has been entered successfully. If equipped, the message center displays "TRAIN LEFT FRONT TIRE." Place the magnet on the valve stem of the LF tire pressure sensor. The horn will sound briefly to indicate that the tire pressure sensor has been recognized by the TPMS module.
7.Within two minutes after the horn sounds, place the magnet on the valve stem of the RF tire pressure sensor. NOTE: If the TPMS module does not recognize any one of the four tire pressure sensors during the tire training procedure, the horn will sound twice and the message center (if equipped) will display "TIRE TRAINING MODE INCOMPLETE." If this occurs, the entire procedure must be repeated from Step 1.
8. Repeat Step 7 for the RR and LR tires. When the tire training procedure is complete, the horn will sound once and the message center (if equipped) will display TIRE TRAINING MODE COMPLETE.

This should help. For now, probably all Fords are like this. And I do not believe that Ford puts sensors in their spares (some GMs do).
Good luck

It is on the same button as the Trip Odometer. Cycle through until you see Tire Reset and hold the button down.