P03AF Trouble Code

View P03AF obd/2 error code description and symptoms. P03AF 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 P03AF

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.

P03AF Error Code Repair Process :

For air assist control valve range/performance 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. P03AF 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 air assist control valve range/performance with your car's computers to find out exactly what's prompting the light to turn on.

P03AF 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 P03AF

A common cause of code P03AF is the failure of Air Assist Control Valve Range/Performance, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Faulty Crankshaft Position Sensor (POS)
Faulty Fuel injector
Engine Control Module (ECM)

P03AF code for all cars

You can view according P03AF DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P03AF Paterson Sedan

+P03AF Austin A95

+P03AF Honda Insight

+P03AF Mercedes-benz 250

+P03AF Alfa Romeo 6c

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

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