The TPMS system is the shorten word of Tire Pressure Monitoring System. This system monitors the pressure of the tire and when it drops below a certain pressure, the TPMS ECU makes the warning lamp turn on for notifying the driver. This system consists of TPMS ECU(or TPMS Receiver) and TPMS sensors. The TPMS ECU monitors the battery voltage to determine, as a safety issue, whether this system can operate normally or not. The normal battery voltage range is essential for controlling this system as intended.
The TPMS ECU monitors the voltage of battery and if it stays above a certain value, this DTC is set.
Item
Detecting Condition
Possible Cause
DTC Strategy
Monitoring the voltage of battery
Open/short in power circuit.
Faulty charging system
Faulty TPMS ECU
Enable Conditions
Engine "ON"
Threshold value
The battery voltage is above 17.5V
Bat. Voltage
IG Key ON
ENG. ON
Approx. 11.8 [V]~12.5 [V]
Approx. 12.5 [V] ~ 14.5 [V]