Mazda 6 Service Manual: Dtc b1681

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, ...

Dtc b2103

Diagnostic procedure ...

Other materials:

Mazda 6 Service Manual: Intermittent concern troubleshooting
  Vibration Method 1. If malfunction occurs or becomes worse while driving on a rough road or when engine is vibrating, perform the steps below. Note There are several reasons vehicle or engine vibration could cause an electrical malfunction. Some of the things to check for are: ...

Mazda 6 Service Manual: Rear brake (disc) inspection
Brake Judder Repair Hint 1. (See FRONT BRAKE (DISC) INSPECTION.) Disc Plate Thickness Inspection Caution Excessive runout may result if the disc plate is removed from the vehicle then machined. Machine the disc plate while installed on the vehicle. 1. Measure the thickness of the dis ...