B2784 Code: Meaning, Causes, and Symptoms | OBD2 Codes

B2784 – Antenna Coil Open/Short


B2784 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


B2784 Possible Causes


Faulty Transponder key amplifier,Transponder key amplifier wire harness,Faulty tTransponder key ECU assy


B2784 Description


The transponder key coil is built into the transponder key amplifier and receives a key code signal from the transponder chip in the key. This signal is amplified by the amplifier, then it is output to the transponder key ECU assembly.