Subaru Legacy BN/BS (2015-2019) Service Manual: Knock sensor

Disassembly

1. Remove the throttle body. Throttle Body > REMOVAL2. Remove the EGR pipe. EGR Pipe > REMOVAL3. Remove the EGR control valve. EGR Control Valve > REMOVAL4. Remove the purge control solenoid valve. ...

Removal

1. Disconnect the ground terminal from battery sensor. NOTE2. Remove the bolt securing the connector to the A/C compressor.3. Disconnect the connector (A) from the knock sensor, and remove the knock ...

Other materials:

Dtc b1803 short in driver's airbag (to +b)
DIAGNOSIS START CONDITION:Ignition voltage is 10 V to 16 V.DTC DETECTING CONDITION:Short circuit failure in power supply (shorted in main harness power supply, shorted in roll connector power supply, shorted in driver’s airbag power supply, shorted in airbag CM internal circuit power supply)CA ...