DTC P0731:00 [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 P0731:00	Gear 1 incorrect ratio
DETECTION CONDITION	The TCM detects that revolution ratio of the input revolution to output revolution is less than 2.157 four times when the following conditions are met. 1GR Throttle opening angle: 5.67% or more Diagnostic support note The MIL does not illuminate. The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle. PENDING CODE is not available. FREEZE FRAME DATA is not available. The DTC is stored in the TCM memory.
POSSIBLE CAUSE	Deteriorated ATF ATF level low Solenoid valve malfunction Pressure control solenoid A Shift solenoid A Line pressure malfunction Stall speed malfunction Forward clutch slipping One-way clutch No. 1 slipping Primary control valve body malfunction TCM malfunction

DTC P0731:00

Gear 1 incorrect ratio

DETECTION CONDITION

The TCM detects that revolution ratio of the input revolution to output revolution is less than 2.157 four times when the following conditions are met.
- 1GR
- Throttle opening angle: 5.67% or more

Diagnostic support note

The MIL does not illuminate.
The AT warning light illuminates if the TCM detects the above malfunction condition during the first drive cycle.
PENDING CODE is not available.
FREEZE FRAME DATA is not available.
The DTC is stored in the TCM memory.

POSSIBLE CAUSE

Deteriorated ATF
ATF level low
Solenoid valve malfunction
- Pressure control solenoid A
- Shift solenoid A
Line pressure malfunction
Stall speed malfunction
Forward clutch slipping
One-way clutch No. 1 slipping
Primary control valve body malfunction
TCM malfunction