October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Code 28: (Solenoid Valve - EGR)

Fig 1: Trouble Code No. 28 - Diagnostic Flowchart

Courtesy of MAZDA MOTORS CORP.

Fig 2: Trouble Code No. 28 - Schematic

Courtesy of MAZDA MOTORS CORP.