P1838 Humber 20 OBD Code

OBD/2 P1838 error code description and symptoms.

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 P1838

As long as the throttle plate remains closed, the idling speed and quality is controlled by the PCM via the idle control valve, and as can be seen from the above it should be clear that idle control on a gasoline engine is a complex affair. For instance, if the engine is started in sub-zero temperatures, the PCM will command the idling control valve to allow less air to enter the engine to enrich the air/fuel mixture to create a condition which is roughly analogous to how chokes worked on carburetted engines to control idling in cold weather.

P1838 Humber 20 Error Code Repair Process :

For p1838 transmission transfer case shift motor circuit failure check engine light is perhaps the most troubling of lights because it could mean so many different things, from you didn't screw the gas cap on tightly enough to look out for pistons flying through the hood and into the stratosphere. The easiest way to find out what this light is telling you is to hook your vehicle up to a scan tool. P1838 error code diagnostic tool looks a little like an oversized calculator and plugs into a communication port inside the car. After you instruct it to perform the scan, it speaks p1838 transmission transfer case shift motor circuit failure with your car's computers to find out exactly what's prompting the light to turn on.

Common Causes of Humber 20 P1838 OBD2 Code

A common cause of code P1838 is the failure of P1838 Transmission Transfer Case Shift Motor Circuit Failure, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Continuous oil flow to the VCT piston chamber
EVAP canister or fuel tank leaks
Faulty Intake Valve Timing Control Solenoid Valve

P1838 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.

Engine OBD 2 Codes website is a freeware resource center for engine trouble codes.

About Us | Contact | Privacy

P1838 Humber 20 OBD Code

P1838 Humber 20 Error Code Repair Process :

Common Causes of Humber 20 P1838 OBD2 Code

P1838 code for other Humber cars