DTC P0731: Notes

• The PCM monitors the revolution ratio of the forward clutch drum revolution to differential gear case revolution when the following monitoring conditions are met. If the revolution ratio is 2.185 or less  , the PCM determines that there is a malfunction.

• ATF temperature 20 °C {68 °F} or more 
• Driving in 1GR in D or M range
• Engine running
• Turbine speed within 225-4,987 RPM 
• Accelerator opening angle 2.77 % or more 
• Differential gear case (output) revolution speed 35 RPM or more  .
• 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

Diagnostic support note: 

• This is a continuous monitor (CCM).
• The MIL does not illuminate.
• The AT warning light illuminates if the PCM detects the above malfunction condition during the first drive cycle.
• FREEZE FRAME DATA is not available.
• A PENDING CODE is not available.
• The DTC is stored in the PCM memory.

• ATF level low
• Deteriorated ATF
• Shift solenoid A stuck
• Pressure control solenoid stuck
• Line pressure low
• One-way clutch slipping
• Forward clutch slipping
• Control valve stuck
• Oil pump malfunction
• PCM malfunction