DTC P0841 [FS5A-El]: Notes

2008 Mazda 6 s Sport, 4D Hatchback, StandardSECTION Notes
WARNING: This page is about a different variant/trim than selected.
DTC P0841 [FS5A-EL] DETECTION CONDITION AND POSSIBLE CAUSES

DTC P0841 Oil pressure switch circuit malfunction
DETECTION CONDITION 
  • When DTC P0731, P0732, P0733 and P0734 are not output and 10 s or more  has passed.
    • When all the conditions below are satisfied while driving in 1GR, 2GR or 3GR
      • ATF temperature 20°C {68°F} or more 
      • Oil pressure switch OFF
      • Revolution ratio of forward clutch drum revolution to differential gear case revolution within 0.91-3.07 
      • None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773, P0791
    • When all conditions below are satisfied while driving in 4GR or 5GR
      • ATF temperature 20°C {68°F} or more 
      • Oil pressure switch ON
      • Revolution ratio of forward clutch drum revolution to differential gear case revolution within 0.64-0.81 
      • None of the following DTCs are present: P0706, P0707, P0708, P0712, P0713, P0715, P0720, P0751, P0752, P0753, P0756, P0757, P0758, P0761, P0762, P0763, P0766, P0767, P0768, P0771, P0772, P0773, P0791

Diagnostic support note: 
  • This is a continuous monitor (CCM).
  • The MIL does not illuminates if the TCM detects the above malfunction condition in two consecutive drive cycles or in one drive cycle while the DTC for the same malfunction has been stored in the TCM.
  • A PENDING CODE is not available.
  • FREEZE FRAME DATA is not available.
  • The AT warning light does not illuminates.
  • The DTC is stored in the TCM memory.
POSSIBLE CAUSE 
  • ATF level low
  • Deteriorated ATF
  • Line pressure low
  • Oil pressure switch malfunction
  • Open circuit in wiring harness between oil pressure switch terminal A and TCM terminal 2J
  • Short to ground in wiring harness between oil pressure switch terminal A and TCM terminal 2J
  • Damaged connector between oil pressure switch and TCM
  • Control valve stuck
  • TCM malfunction
G04326025
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.