Diagnostic Procedure

WARNING: This page is about a different car, the 2004 Mazda RX-8. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Possible Cause - DTC P0841: Oil Pressure Switch "B" Circuit Malfunction (Steps 1-3)

Courtesy of MAZDA MOTORS CORP.

Fig 2: Possible Cause - DTC P0841: Oil Pressure Switch "B" Circuit Malfunction (Steps 4-13)

Courtesy of MAZDA MOTORS CORP.

Fig 3: Possible Cause - DTC P0841: Oil Pressure Switch "B" Circuit Malfunction (Steps 14-16)

Courtesy of MAZDA MOTORS CORP.