Lost Communication With Tire Pressure Monitor Module

Possible causes

• CommonLow battery voltage or a discharged battery, dropping modules off the bus
• CommonBlown fuse or corroded earth on the supply to the tyre pressure monitor module
• CommonCorroded or water-ingressed connector at the module
• CommonDamaged, chafed or corroded bus wiring
• PossibleFailed module
• PossibleModule not configured after wheel, sensor or tyre work

What you might notice

• Tyre pressure warning light on or flashing
• Tyre pressure display blank or showing dashes
• System reports no sensors found
• No effect on how the car drives

What to check, in order

1. Check all four tyre pressures with a gauge, including the spare, and keep checking them by hand until this is repaired. That restores the thing you have actually lost.
2. Check battery voltage and state of charge before anything else. A weak or failing battery drops modules off the bus and sets lost-communication codes with no wiring fault at all - this is the single most common false lead in this whole family.
3. Ask whether tyres, wheels or sensors were changed recently. The system usually needs relearning to the new sensors, and an unconfigured system is far more common than a failed module.
4. Check the fuses, earths and connector for the tyre pressure monitor module.
5. Distinguish this from a low sensor battery. Individual sensor batteries last a handful of years and their failure sets a different code - this one says the module itself is not answering.