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Home >> Lexus >> 2008 >> IS 250 RWD, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 22 (Automatic Transaxle) >> Automatic Transmission System >> DTC P0872: Transmission Fluid Pressure Sensor / Switch "C" Circuit Low >> Typical Malfunction Thresholds

Typical Malfunction Thresholds

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

When both conditions below are met- OFF malfunction (A) and OFF malfunction (B), (C), (D), (E) or (F)

2 detections are necessary per driving cycle:

1st detection: temporary flag ON

2nd detection. pending fault code ON

OFF malfunction (A) 

TYPICAL MALFUNCTION THRESHOLDS

Oil pressure switch indication OFF

OFF malfunction (B) 

When either condition below is met: Condition (1) or (2)

Condition (1) 

TYPICAL MALFUNCTION THRESHOLDS

Turbine speed / Output speed (NT / NO) 3 9 or more and 8 0 or less (when output speed less than 130 rpm)

Condition (2) 

TYPICAL MALFUNCTION THRESHOLDS

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)

OFF malfunction (C) 

When either condition below is met. Condition (1) or (2)

Condition (1) 

TYPICAL MALFUNCTION THRESHOLDS

Turbine speed / Output speed (NT / NO) 2 4 or more and 2 9 or less (when output speed less than 200 rpm)

Condition (2) 

TYPICAL MALFUNCTION THRESHOLDS

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)

OFF malfunction (D) 

When either condition below is met. Condition (1) or (2)

Condition (1) 

TYPICAL MALFUNCTION THRESHOLDS

Turbine speed / Output speed (NT / NO) 1 72 or more and 2 07 or less (when output speed less than 400 rpm)

Condition (2) 

TYPICAL MALFUNCTION THRESHOLDS

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)

OFF malfunction (E) 

When either condition below is met. Condition (1) or (2)

Condition (1) 

TYPICAL MALFUNCTION THRESHOLDS

Turbine speed / Output speed (NT / NO) 1 354 or more and 1 584 or less (when output speed less than 600 rpm)

Condition (2) 

TYPICAL MALFUNCTION THRESHOLDS

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)

OFF malfunction (F) 

When either condition below is met. Condition (1) or (2)

Condition (1) 

TYPICAL MALFUNCTION THRESHOLDS

Turbine speed / Output speed (NT / NO) 1 141 or more and 1 291 or less (when output speed less than 600 rpm)

Condition (2) 

TYPICAL MALFUNCTION THRESHOLDS

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)