P0879 Code - Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent

What does P0879 Mean?

OBD-II Code Transmission may not shift properly is defined as a Transmission Fluid Pressure Sensor/Switch "D" Circuit Intermittent

The Transmission Fluid Pressure Sensor tells the Transmission control module (TCM) the pressure of the fluid going through the transmission. When the TCM detects an incorrect signal from the Transmission Pressure Sensor, it sends a signal to the engine control module (PCM) to set code P0879.

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What are the common causes of P0879 ?

• A plugged converter will cause of host of driveability problems as well as set this code. A severely plugged converter will result in the inability to increase rpm when under load. Look for a code such as P0421 -- catalytic converter efficiency below threshold if the converter indicating a faulty converter.
• Dirty air cleaner element Damaged DPF
• Defective ECU strategies or components will prevent proper regeneration

How do you troubleshoot P0879 ?

Deactivation of cylinders is achieved by releasing a synchroniser pin that normally interlocks the cam follower and rocker arms. P0879 code resolves the synchroniser pin is released using hydraulic pressure which is controlled by a dedicated solenoid.

Searches related to P0879 - Transmission Fluid Pressure Sensor/Switch 'D' Circuit Intermittent

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