P1878 Trouble Code

View P1878 obd/2 error code description and symptoms. P1878 engine photo

The Transmission Fluid Pressure Switch allows the engine's control module (PCM) or Transmission Control Module (TCM) to use hydraulic fluid to engage the clutches in the transmission to allow for smoother shifting while driving. If the PCM or TCM detects an issue with the hydraulic clutch or the pressure switch, the PCM or TCM will set code P1878

One example of this would be when an automatic vehicle in placed in gear. To prevent the added drag from the torque converter and transmission from reducing the idling speed, the PCM will command the idle control valve to allow more air to enter the engine, while at the same time, adjusting the injector pulse width to inject more fuel to suit the increased amount of air. Note that the idle air control valve is closed by the PCM when the throttle plate is opened to prevent excess air from entering the engine.

P1878 Error Code Repair Process :

The scent may P1878 signal oil or coolant leaking from their normally closed-loop systems, or it may indicate dangerous exhaust gases invading your car's interior. Car and truck exhaust contains toxic gases such P1878, so if the inside of your car p1878 transmission transfer case disengaged solenoid circuit failure as if you were standing behind your car, get out and get it fixed. Fight the urge to take a little nap first. So sleepy. That's the carbon monoxide talking, friends. At least open a window on your way to the shop.

P1878 is a kind of Powertrain Trouble Code

Powertrain of a modern automobile, comprising engine (with exhaust system), transmission, drive shaft, suspension and the wheels. In a motor vehicle, the term powertrain or powerplant describes the main components that generate power and deliver it to the road surface, water, or air.

Common Causes of P1878

A common cause of code P1878 is the failure of P1878 Transmission Transfer Case Disengaged Solenoid Circuit Failure, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Failures of clutch motion/travel sensors.
Ignition misfiring
Faulty variable valve timing (VVT)

P1878 code for all cars

You can view according P1878 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P1878 Ferrari F399

+P1878 Maserati Mexico

+P1878 Caterham Superlight

+P1878 Lamborghini Urraco

+P1878 Saturn Ion

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