Ford F-150: Why is My Tire Pressure Light On?

These steps will help you figure out why the Tire Pressure Monitoring System (TPMS) light in your Ford F-150 or Super Duty is staying on.

By Cynthia Griffith - September 15, 2014

This article pertains to the Ford F-150 (2004-2014) and the F-250, F-350 Super Duty (2005-2014).

If the tire pressure light in your Ford F-150 or Super Duty won’t go off, it could be the sign of a much bigger problem. On the other hand, the problem might be one that is easy to solve. Following the steps below will help you to determine the source of the warning signal.

Step 1 - Examine your TPMS light

If the TPMS light is solid and you’ve recently had your tires rotated without resetting the sensors, simply reset the TPMS light using a reset tool like the one depicted in the photograph below.

Figure 1. Follow the instructions in your manual to reset the TPMS sysem with the remote.

However, if the TPMS light is is flashing, one—or several—of your TPMS sensors are giving you an error. It might mean that they're actually malfunctioning or just out of battery. Skip to Step 3 if this is your issue.

Step 2 - Check tire pressure

A quick trip to the gas station could help you to determine whether or not your tire pressure light is giving you an accurate reading. If you examine your tire pressure and discover it is below the recommended tire pressure for your Ford F150, reinflate the tire and/or tires in need of air and take a two minute spin around the block at a speed that exceeds 20 mph.

Pro Tip

Depending on the wheels and tires you have on your truck, the tire pressure might be different. In stock trucks, you can look at the door jamb sticker to figure out what tire pressure you need.

Step 3 - Pull the codes with a scan tool

Carefully plug a body code reading scan tool into the diagnostic connector which you will find underneath the steering column of your Ford F-150. This scan tool will return with one of the following codes:

  • B106A – This signifies the fact that your pressure sensor signal is faulty.
  • B106B – This signifies that your tire pressure sensor battery is low.
  • B2477 – This error indicates that your vehicle security module was configured incorrectly.

The following error codes indicate the fact that the pressure sensor for a specific tire could not be found. The code number also indicates which tire is missing the pressure sensor.

  • B2868 – left front tire
  • B2869 – right front tire
  • B2870 – right rear tire
  • B2871 – left rear tire

Two other common readings include:

  • B2872 – There is a tire pressure sensor fault.
  • C2780 – The ECU is in manufacturing mode

If your scanner displayed any of the following codes, the next step is to perform a VSM relearn procedure:

  • B2868
  • B 2869
  • B 2870
  • B 2871
  • B 2872 – This error also requires you to activate the sensors.
  • C 2780

Step 4 - Replace TPMS sensors if required

In many cases, rectifying the problem is a simple matter of replacing the TPMS sensors. They will go bad eventually as they're battery powered. Replacing them is as easy as changing your valve stem. Going this route will cost you about 30 bucks per sensor.

  • Figure 2. Ealier 2004-2008 Generation F-150s come with TPMS sensors that are secured by a band around the rim.
  • Tire Pressure Monitoring System (TPMS) Valve Sensor
    Figure 3. Newer models of F-150 come with valve sensors instead of bands.

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