Mazda 6 Service Manual: No.20 noise occurs at idle when vehicle is stopped in all positions/ranges

No.19 excessive shift shock on torque converter clutch (tcc)

No.21 noise occurs at idle when vehicle is stopped in d, s, l ranges, or in r position

Other materials:

Mazda 6 Service Manual: Dtc table
Note Perform the following if the security light stays on: - If gasoline engine stalls, go to symptom troubleshooting NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/JERK, HESITATION/STUMBLE, SURGES in. (See NO.11 ENGINE STALLS/QUITS, ENGINE RUNS ROUGH, MISSES, BUCK/J ...

Mazda 6 Service Manual: Radar Sensor (Front) (Some models)
Your vehicle is equipped with a radar sensor (front). The following systems also use the radar sensor (front). Distance Recognition Support System (DRSS) Mazda Radar Cruise Control (MRCC) Smart Brake Support (SBS) The radar sensor (front) functions by detecting the radio waves reflected ...