Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

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LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

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Test E

Pinpoint Test E: DTC B2872, B2885-Tire Pressure Sensor Fault

E1 - E2:




E3:





Normal Operation
Each tire pressure sensor transmits a specific radio frequency to the TPMS module once every minute when the vehicle ignition is on.
The tire pressure sensor valve stem serves as an antenna which sends the radio signal to the TPMS module. The tire pressure sensor is battery powered.

Possible Causes
- Tire pressure sensor
- TPMS module
Tire pressure sensor battery