P3421 Trouble Code

View P3421 obd/2 error code description and symptoms. P3421 engine photo

The issue covered by the bulletin involves a power steering noise/whine or fluid leak from the power steering pump, gear or high pressure side power steering hose during extreme low outdoor temperature operation.

As the engine heats up and combustion becomes easier and more complete, the PCM will command the idling control valve to increase the amount of air entering the engine to suit the changing conditions. However, when the load on the engine changes, say, when some electrical consumers or other systems are either turned on or off, the PCM adapts the signal voltage to the idle control valve to ensure that the idling speed remains stable, and at the RPM specified by the manufacturer.

Difficulty Level (Soso)
Level
Repair Time (30 Min.)
Time
Cost Prediction : $ 80-120

P3421 Error Code Repair Process :

If your p3421 cylinder 3 exhaust valve control circuit/open check engine light is illuminated, it's best to take it in for diagnostic testing, which can feel like a hassle. Because while the lights vary in appearance from vehicle to vehicle, all have the same basic meaning: There's a problem with the car's emissions system. The on-board diagnostics system P3421 and engine control unit are in charge of monitoring a bunch of different p3421 cylinder 3 exhaust valve control circuit/open, and if they get a reading that's a little out of whack, up pops the check engine light.

Wrench Tool P3421 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 P3421

A common cause of code P3421 is the failure of P3421 Cylinder 3 Exhaust Valve Control Circuit/Open, but there are several other possible causes as well, such as ;

P3421 code for all cars

You can view according P3421 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3421 Lancia Thesis +P3421 Rover P5 +P3421 Packard Mayfair +P3421 Bmw 316 +P3421 Maxwell Model L

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