C1346 Code: Meaning, Causes, and Symptoms | OBD2 Codes

C1346 – Rear Low Frequency Initiator Channel Failure


C1346 Possible Symptoms


Anti-Lock Brake System (ABS) Warning Light ON,Engine Light ON (or Service Engine Soon Warning Light)


C1346 Possible Causes


Faulty Rear Low Frequency Initiator,Rear Low Frequency Initiator harness is open or shorted,Rear Low Frequency Initiator circuit poor electrical connection


C1346 Description


The Tire Pressure Monitoring System (TPMS) 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), Initiators and TPMS sensors. The Initiator controls each TPMS sensor via the low frequency. This initiator enables a driver to see which tire has a low pressure.