P3021 Trouble Code

View P3021 obd/2 error code description and symptoms. P3021 engine photo

Vehicle Speed Sensor (VSS) Intermittent Indicates the powertrain control module (PCM) detected an error in the vehicle speed information. Vehicle speed data is received from either the vehicle speed sensor (VSS), transfer case speed sensor (TCSS), anti-lock brake system (ABS) control module, generic electronic module (GEM), or central timer module (CTM). This DTC is set the same way as P3021. However, it is intended to flash the transmission control indicator lamp (TCIL) for first time VSS circuit error/malfunctions. Refer to possible causes for P3021

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.

P3021 Error Code Repair Process :

The scent may P3021 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 P3021, so if the inside of your car air bag memory clear 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.

P3021 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 P3021

A common cause of code P3021 is the failure of Air Bag Memory Clear Circuit Failure, but there are several other possible causes as well, such as ;

EVAP system hose leaking
Faulty Air fuel ratio (A/F) Sensor 1 Bank 1
Intake air leaks
Faulty Fuel injector

P3021 code for all cars

You can view according P3021 DTC for your car model. We selected several models to see obd2 solutions click and view it.

+P3021 Moretti S Coupe

+P3021 Mercedes Viano

+P3021 Duryea Buggy

+P3021 Hyundai Trajet

+P3021 Ferrari 360

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

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