C0900TPMS Sensor 1 Battery
- Generic OBD-II code · Chassis
- Needs a drive cycle to confirm a fix
- How the car detects it
- C0900 does not appear in the publicly available J2012 code lists, and no carmaker publishes it for tire pressure monitoring. The one official mention points elsewhere: GM upfitter bulletin 80C for the 2008-2014 Silverado and Sierra HD chassis cab lists C0900 subcode 07 as Device Voltage High, a supply fault logged by the PTO module. The title instead means the battery inside the first wheel transmitter. A Schrader patent describes a single lithium cell and spare function bits in every radio word that can carry a low battery message. Mitsubishi books exactly this case for tire 1 as C1910 and names the cell built into the transmitter as the likely cause. Expect the TPMS lamp; the unit is replaced and its ID registered again.
- What you may notice
- TPMS warning lamp flashes after start, then stays lit
- Pressure reading for one wheel drops out intermittently, more often in cold weather
- Likely causes
- LikelyBuilt-in lithium cell of the wheel transmitter at end of life
- PossibleAged cell whose voltage sags in cold weather
- RareOn GM vehicles the code may instead stem from excessive module supply voltage (Device Voltage High)
- Repair
- Medium · Usually a job for a workshop.Typical cost: €50 – €200
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.