DTC P0841:00 [FS5A-El]: Notes
WARNING: This page is about a different car, the 2009 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
DETECTION CONDITION AND POSSIBLE CAUSE
| DTC P0841:00 |
ON pressure switch circuit malfunction |
| DETECTION CONDITION |
- The TCM detects no signal from the oil pressure switch when the following conditions are met.
- 1GR, 2GR or 3GR
- Revolution ratio of the input revolution to output revolution: 0.91-3.07
- The TCM detects input signal from the oil pressure switch when the following conditions are met.
- 4GR or 5GR
- Revolution ratio of the input revolution to output revolution: 0.64-0.81
Diagnostic support note
- The MIL does not illuminate.
- The AT warning light does not illuminate.
- PENDING CODE is not available.
- FREEZE FRAME DATA is not available.
- The DTC is stored in the TCM memory.
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| POSSIBLE CAUSE |
- Deteriorated ATF
- ATF level low
- Line pressure malfunction
- Oil pressure switch connector or terminal malfunction
- Short to GND in wiring harness between oil pressure switch terminal A and TCM terminal 2J
- Oil pressure switch malfunction
- TCM connector or terminal malfunction
- Open circuit in wiring harness between oil pressure switch terminal A and TCM terminal 2J
- TCM malfunction
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 Courtesy of MAZDA MOTORS CORP.
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