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Home >> Lexus >> 2021 >> RC F Base >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transmission System - Diagnostic Codes (2 Of 3) >> Automatic Transmission System >> DTC P0872: Transmission Fluid Pressure Sensor / Switch "C" Circuit Low [09/2014 - 11/2017] >> Typical Enabling Conditions
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Typical Enabling Conditions

ALL

The monitor will run whenever this DTC is not present.
(Not circuit malfunction)		 P0715, P0717 (Turbine speed sensor circuit)
P0500, P0502, P0503 (Output speed sensor circuit)
P0748 (Shift solenoid valve SL1 circuit)
P0778 (Shift solenoid valve SL2 circuit)
P0798 (Shift solenoid valve SL3 circuit)
P2810 (Shift solenoid valve SL4 circuit)
P2819 (Shift solenoid valve SL5 circuit)
P0985, P0986 (Shift solenoid valve SR circuit)
P0115, P0117, P0118 (ECT sensor circuit)
P0712, P0713 (ATF temperature sensor circuit (TFT sensor))
P0327, P0328, P032C, P032D, P0332, P0333, P033C, P033D (KCS sensor circuit)
P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607, P060A, P060B, P060D, P060E, P0657, P1607, P2102, P2103, P2111, P2112, P2118, P2119, P2135 ((ETCS) Electronic throttle control system)
U0100 (CAN communication system)
NSW switch "D" and "not R" and "not N"
Duration time from shifting "N" to "D" 4 sec. or more
ATF temperature -10°C (14°F) or more
Engine Starting
OFF MALFUNCTION (A)

TCM indicated pressure value of SL1 1600 kPa (16.3 kgf/cm2 , 232 psi)
OFF MALFUNCTION (B)

TCM selected gear 1st
Time after transmission shifts to 1st gear, when detected abnormal shift 1.5 sec. or more
Time after transmission shifts to 1st gear, when not detected abnormal shift 0.2 sec. or more
Duration time from vehicle speed reaching the following value Less than 3 sec.
Vehicle speed 2 km/h (1.25 mph) or more and less than 40 km/h (24.8 mph)
Engine speed - Turbine speed 150 rpm or more
Calculated load value (when A/C ON or OFF) 7.75% or more
ECT (Engine coolant temperature) 40°C (104°F) or more
Spark advance from max. retard timing by KCS control Crankshaft angle 0° or more
  1. When either condition below is met: Condition (1) or (2)

    Condition (1) 

    1. When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
      CONDITION (A)

      Turbine speed / Output speed (NT / NO)
      (Actual 1st gear)      		 3.9 or more and 8.0 or less
      (when output speed less than 130 rpm)
      CONDITION (B)

      Turbine speed / Output speed (NT / NO)
      (Actual 2nd gear)      		 2.4 or more and 2.9 or less
      (when output speed less than 200 rpm)
      CONDITION (C)

      Turbine speed / Output speed (NT / NO)
      (Actual 3rd gear)      		 1.72 or more and 2.07 or less
      (when output speed less than 400 rpm)
      CONDITION (D)

      Turbine speed / Output speed (NT / NO)
      (Actual 4th gear)      		 1.354 or more and 1.584 or less
      (when output speed less than 600 rpm)
      CONDITION (E)

      Turbine speed / Output speed (NT / NO)
      (Actual 5th gear)      		 1.141 or more and 1.291 or less
      (when output speed less than 600 rpm)
      CONDITION (F)

      Turbine speed / Output speed (NT / NO)
      (Actual 6th gear)      		 0.93 or more and 1.07 or less
      (when output speed less than 800 rpm)
      CONDITION (G)

      Turbine speed / Output speed (NT / NO)
      (Actual 7th gear)      		 0.759 or more and 0.889 or less
      (when output speed less than 800 rpm)
      CONDITION (H)

      Turbine speed / Output speed (NT / NO)
      (Actual 8th gear)      		 0.62 or more and 0.75 or less
      (when output speed less than 1000 rpm)

    Condition (2) 

    1. When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)
      CONDITION (A)

      Turbine speed - Output speed (NT - NO) x 1st gear ratio
      (Actual 1st gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 130 rpm or more)
      CONDITION (B)

      Turbine speed - Output speed (NT - NO) x 2nd gear ratio
      (Actual 2nd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 200 rpm or more)
      CONDITION (C)

      Turbine speed - Output speed (NT - NO) x 3rd gear ratio
      (Actual 3rd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 400 rpm or more)
      CONDITION (D)

      Turbine speed - Output speed (NT - NO) x 4th gear ratio
      (Actual 4th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (E)

      Turbine speed - Output speed (NT - NO) x 5th gear ratio
      (Actual 5th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (F)

      Turbine speed - Output speed (NT - NO) x 6th gear ratio
      (Actual 6th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (G)

      Turbine speed - Output speed (NT - NO) x 7th gear ratio
      (Actual 7th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (H)

      Turbine speed - Output speed (NT - NO) x 8th gear ratio
      (Actual 8th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 1000 rpm or more)
OFF MALFUNCTION (C)

TCM selected gear 2nd
Time after transmission shifts to 2nd gear, when detected abnormal shift 1.5 sec. or more
Time after transmission shifts to 2nd gear, when not detected abnormal shift 0.2 sec. or more
Vehicle speed 2 km/h (1.25 mph) or more
Throttle valve opening angle 6.5% or more at engine speed 2000 rpm
(condition varies with engine speed)
Calculated load value (when A/C ON or OFF) 7.75% or more
ECT (Engine coolant temperature) 40°C (104°F) or more
Spark advance from max. retard timing by KCS control Crankshaft angle 0° or more
  1. When either condition below is met: Condition (1) or (2)

    Condition (1) 

    1. When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
      CONDITION (A)

      Turbine speed / Output speed (NT / NO)
      (Actual 1st gear)      		 3.9 or more and 8.0 or less
      (when output speed less than 130 rpm)
      CONDITION (B)

      Turbine speed / Output speed (NT / NO)
      (Actual 2nd gear)      		 2.4 or more and 2.9 or less
      (when output speed less than 200 rpm)
      CONDITION (C)

      Turbine speed / Output speed (NT / NO)
      (Actual 3rd gear)      		 1.72 or more and 2.07 or less
      (when output speed less than 400 rpm)
      CONDITION (D)

      Turbine speed / Output speed (NT / NO)
      (Actual 4th gear)      		 1.354 or more and 1.584 or less
      (when output speed less than 600 rpm)
      CONDITION (E)

      Turbine speed / Output speed (NT / NO)
      (Actual 5th gear)      		 1.141 or more and 1.291 or less
      (when output speed less than 600 rpm)
      CONDITION (F)

      Turbine speed / Output speed (NT / NO)
      (Actual 6th gear)      		 0.93 or more and 1.07 or less
      (when output speed less than 800 rpm)
      CONDITION (G)

      Turbine speed / Output speed (NT / NO)
      (Actual 7th gear)      		 0.759 or more and 0.889 or less
      (when output speed less than 800 rpm)
      CONDITION (H)

      Turbine speed / Output speed (NT / NO)
      (Actual 8th gear)      		 0.62 or more and 0.75 or less
      (when output speed less than 1000 rpm)

    Condition (2) 

    1. When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)
      CONDITION (A)

      Turbine speed - Output speed (NT - NO) x 1st gear ratio
      (Actual 1st gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 130 rpm or more)
      CONDITION (B)

      Turbine speed - Output speed (NT - NO) x 2nd gear ratio
      (Actual 2nd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 200 rpm or more)
      CONDITION (C)

      Turbine speed - Output speed (NT - NO) x 3rd gear ratio
      (Actual 3rd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 400 rpm or more)
      CONDITION (D)

      Turbine speed - Output speed (NT - NO) x 4th gear ratio
      (Actual 4th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (E)

      Turbine speed - Output speed (NT - NO) x 5th gear ratio
      (Actual 5th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (F)

      Turbine speed - Output speed (NT - NO) x 6th gear ratio
      (Actual 6th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (G)

      Turbine speed - Output speed (NT - NO) x 7th gear ratio
      (Actual 7th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (H)

      Turbine speed - Output speed (NT - NO) x 8th gear ratio
      (Actual 8th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 1000 rpm or more)
OFF MALFUNCTION (D)

TCM selected gear 3rd
Time after transmission shifts to 3rd gear, when detected abnormal shift 1.5 sec. or more
Time after transmission shifts to 3rd gear, when not detected abnormal shift 0.2 sec. or more
Vehicle speed 2 km/h (1.25 mph) or more
Throttle valve opening angle 6.5% or more at engine speed 2000 rpm
(condition varies with engine speed)
Calculated load value (when A/C ON or OFF) 7.75% or more
ECT (Engine coolant temperature) 40°C (104°F) or more
Spark advance from max. retard timing by KCS control Crankshaft angle 0° or more
  1. When either condition below is met: Condition (1) or (2)

    Condition (1) 

    1. When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
      CONDITION (A)

      Turbine speed / Output speed (NT / NO)
      (Actual 1st gear)      		 3.9 or more and 8.0 or less
      (when output speed less than 130 rpm)
      CONDITION (B)

      Turbine speed / Output speed (NT / NO)
      (Actual 2nd gear)      		 2.4 or more and 2.9 or less
      (when output speed less than 200 rpm)
      CONDITION (C)

      Turbine speed / Output speed (NT / NO)
      (Actual 3rd gear)      		 1.72 or more and 2.07 or less
      (when output speed less than 400 rpm)
      CONDITION (D)

      Turbine speed / Output speed (NT / NO)
      (Actual 4th gear)      		 1.354 or more and 1.584 or less
      (when output speed less than 600 rpm)
      CONDITION (E)

      Turbine speed / Output speed (NT / NO)
      (Actual 5th gear)      		 1.141 or more and 1.291 or less
      (when output speed less than 600 rpm)
      CONDITION (F)

      Turbine speed / Output speed (NT / NO)
      (Actual 6th gear)      		 0.93 or more and 1.07 or less
      (when output speed less than 800 rpm)
      CONDITION (G)

      Turbine speed / Output speed (NT / NO)
      (Actual 7th gear)      		 0.759 or more and 0.889 or less
      (when output speed less than 800 rpm)
      CONDITION (H)

      Turbine speed / Output speed (NT / NO)
      (Actual 8th gear)      		 0.62 or more and 0.75 or less
      (when output speed less than 1000 rpm)

    Condition (2) 

    1. When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)
      CONDITION (A)

      Turbine speed - Output speed (NT - NO) x 1st gear ratio
      (Actual 1st gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 130 rpm or more)
      CONDITION (B)

      Turbine speed - Output speed (NT - NO) x 2nd gear ratio
      (Actual 2nd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 200 rpm or more)
      CONDITION (C)

      Turbine speed - Output speed (NT - NO) x 3rd gear ratio
      (Actual 3rd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 400 rpm or more)
      CONDITION (D)

      Turbine speed - Output speed (NT - NO) x 4th gear ratio
      (Actual 4th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (E)

      Turbine speed - Output speed (NT - NO) x 5th gear ratio
      (Actual 5th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (F)

      Turbine speed - Output speed (NT - NO) x 6th gear ratio
      (Actual 6th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (G)

      Turbine speed - Output speed (NT - NO) x 7th gear ratio
      (Actual 7th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (H)

      Turbine speed - Output speed (NT - NO) x 8th gear ratio
      (Actual 8th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 1000 rpm or more)
OFF MALFUNCTION (E)

TCM selected gear 4th
Time after transmission shifts to 4th gear, when detected abnormal shift 1.5 sec. or more
Time after transmission shifts to 4th gear, when not detected abnormal shift 0.2 sec. or more
Vehicle speed 2 km/h (1.25 mph) or more
Throttle valve opening angle 6.5% or more at engine speed 2000 rpm
(condition varies with engine speed)
Calculated load value (when A/C ON or OFF) 7.75% or more
ECT (Engine coolant temperature) 40°C (104°F) or more
Spark advance from max. retard timing by KCS control Crankshaft angle 0° or more
  1. When either condition below is met: Condition (1) or (2)

    Condition (1) 

    1. When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
      CONDITION (A)

      Turbine speed / Output speed (NT / NO)
      (Actual 1st gear)      		 3.9 or more and 8.0 or less
      (when output speed less than 130 rpm)
      CONDITION (B)

      Turbine speed / Output speed (NT / NO)
      (Actual 2nd gear)      		 2.4 or more and 2.9 or less
      (when output speed less than 200 rpm)
      CONDITION (C)

      Turbine speed / Output speed (NT / NO)
      (Actual 3rd gear)      		 1.72 or more and 2.07 or less
      (when output speed less than 400 rpm)
      CONDITION (D)

      Turbine speed / Output speed (NT / NO)
      (Actual 4th gear)      		 1.354 or more and 1.584 or less
      (when output speed less than 600 rpm)
      CONDITION (E)

      Turbine speed / Output speed (NT / NO)
      (Actual 5th gear)      		 1.141 or more and 1.291 or less
      (when output speed less than 600 rpm)
      CONDITION (F)

      Turbine speed / Output speed (NT / NO)
      (Actual 6th gear)      		 0.93 or more and 1.07 or less
      (when output speed less than 800 rpm)
      CONDITION (G)

      Turbine speed / Output speed (NT / NO)
      (Actual 7th gear)      		 0.759 or more and 0.889 or less
      (when output speed less than 800 rpm)
      CONDITION (H)

      Turbine speed / Output speed (NT / NO)
      (Actual 8th gear)      		 0.62 or more and 0.75 or less
      (when output speed less than 1000 rpm)

    Condition (2) 

    1. When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)
      CONDITION (A)

      Turbine speed - Output speed (NT - NO) x 1st gear ratio
      (Actual 1st gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 130 rpm or more)
      CONDITION (B)

      Turbine speed - Output speed (NT - NO) x 2nd gear ratio
      (Actual 2nd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 200 rpm or more)
      CONDITION (C)

      Turbine speed - Output speed (NT - NO) x 3rd gear ratio
      (Actual 3rd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 400 rpm or more)
      CONDITION (D)

      Turbine speed - Output speed (NT - NO) x 4th gear ratio
      (Actual 4th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (E)

      Turbine speed - Output speed (NT - NO) x 5th gear ratio
      (Actual 5th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (F)

      Turbine speed - Output speed (NT - NO) x 6th gear ratio
      (Actual 6th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (G)

      Turbine speed - Output speed (NT - NO) x 7th gear ratio
      (Actual 7th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (H)

      Turbine speed - Output speed (NT - NO) x 8th gear ratio
      (Actual 8th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 1000 rpm or more)
OFF MALFUNCTION (F)

TCM selected gear 5th
Time after transmission shifts to 5th gear, when detected abnormal shift 1.5 sec. or more
Time after transmission shifts to 5th gear, when not detected abnormal shift 0.2 sec. or more
Vehicle speed 2 km/h (1.25 mph) or more
Throttle valve opening angle 6.5% or more at engine speed 2000 rpm
(condition varies with engine speed)
Calculated load value (when A/C ON or OFF) 7.75% or more
ECT (Engine coolant temperature) 40°C (104°F) or more
Spark advance from max. retard timing by KCS control Crankshaft angle 0° or more
  1. When either condition below is met: Condition (1) or (2)

    Condition (1) 

    1. When one of the following conditions is met: Condition (a), (b), (c), (d), (e), (f), (g) or (h)
      CONDITION (A)

      Turbine speed / Output speed (NT / NO)
      (Actual 1st gear)      		 3.9 or more and 8.0 or less
      (when output speed less than 130 rpm)
      CONDITION (B)

      Turbine speed / Output speed (NT / NO)
      (Actual 2nd gear)      		 2.4 or more and 2.9 or less
      (when output speed less than 200 rpm)
      CONDITION (C)

      Turbine speed / Output speed (NT / NO)
      (Actual 3rd gear)      		 1.72 or more and 2.07 or less
      (when output speed less than 400 rpm)
      CONDITION (D)

      Turbine speed / Output speed (NT / NO)
      (Actual 4th gear)      		 1.354 or more and 1.584 or less
      (when output speed less than 600 rpm)
      CONDITION (E)

      Turbine speed / Output speed (NT / NO)
      (Actual 5th gear)      		 1.141 or more and 1.291 or less
      (when output speed less than 600 rpm)
      CONDITION (F)

      Turbine speed / Output speed (NT / NO)
      (Actual 6th gear)      		 0.93 or more and 1.07 or less
      (when output speed less than 800 rpm)
      CONDITION (G)

      Turbine speed / Output speed (NT / NO)
      (Actual 7th gear)      		 0.759 or more and 0.889 or less
      (when output speed less than 800 rpm)
      CONDITION (H)

      Turbine speed / Output speed (NT / NO)
      (Actual 8th gear)      		 0.62 or more and 0.75 or less
      (when output speed less than 1000 rpm)

    Condition (2) 

    1. When all conditions below are met: Condition (a), (b), (c), (d), (e), (f), (g) and (h)
      CONDITION (A)

      Turbine speed - Output speed (NT - NO) x 1st gear ratio
      (Actual 1st gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 130 rpm or more)
      CONDITION (B)

      Turbine speed - Output speed (NT - NO) x 2nd gear ratio
      (Actual 2nd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 200 rpm or more)
      CONDITION (C)

      Turbine speed - Output speed (NT - NO) x 3rd gear ratio
      (Actual 3rd gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 400 rpm or more)
      CONDITION (D)

      Turbine speed - Output speed (NT - NO) x 4th gear ratio
      (Actual 4th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (E)

      Turbine speed - Output speed (NT - NO) x 5th gear ratio
      (Actual 5th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 600 rpm or more)
      CONDITION (F)

      Turbine speed - Output speed (NT - NO) x 6th gear ratio
      (Actual 6th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (G)

      Turbine speed - Output speed (NT - NO) x 7th gear ratio
      (Actual 7th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 800 rpm or more)
      CONDITION (H)

      Turbine speed - Output speed (NT - NO) x 8th gear ratio
      (Actual 8th gear)      		 -50 rpm or more and 50 rpm or less
      (when output speed 1000 rpm or more)
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