TPMS DTC Set Condition
DTC C1901 will be set if the TPMS receiver does not receive vehicle speed signal of 5 km/h (3 mph) or more during driving. At the same time this DTC is set, the TPMS warning light flashes for about 1 minute and then remain illuminated. TPMS receiver senses the vehicle's driving state by a driving G sensor inside the TPMS transmitter.