P2021 Subaru Xv OBD Code

OBD/2 P2021 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 P2021

Some systems require that the actuator has an adequate supply of brake fluid. Low brake fluid levels can mimic the symptoms of code P2021, so consult the manual to locate the brake fluid reservoir. Bear in mind that a low fluid level can set code P2021 on some applications, so make sure that on fluid operated systems the fluid level is up to the mark before starting an electrical diagnosis.

P2021 Subaru Xv Error Code Repair Process :

If your vehicle failed a P2021 test and the P2021 Check Engine Light is NOT on, chances are you have a problem with the OBDII system, a burned out MIL lamp, or a faulty catalytic converter. The converter is essentially an afterburner that cleans up the exhaust after it exits the engine. The OBDII system uses p2021 intake manifold runner position sensor/switch circuit low bank 2 a ownstream oxygen sensor to monitor the efficiency of the converter, and it should detect a drop in converter efficiency if the converter has been contaminated or is failing (ignition misfiring, leaky exhaust valves, and oil burning can all damage the converter). What you want to look p2021 intake manifold runner position sensor/switch circuit low bank 2: Any conditions that might cause ignition misfire, an overly rich or lean fuel condition, or loss of compression. Use your OBD Express DIY to look at the oxygen sensor outputs, coolant temperature, airflow, calculated engine load, and inlet air temperature.

Common Causes of Subaru Xv P2021 OBD2 Code

A common cause of code P2021 is the failure of P2021 Intake Manifold Runner Position Sensor/Switch Circuit Low Bank 2, but there are several other possible causes as well, such as ;

Continuous oil flow to the VCT piston chamber
Damaged camshaft position (CMP) sensor
Air fuel ratio (A/F) Sensor 1 Bank 1 harness is open or shorted
Damaged VCT phaser

P2021 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.

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P2021 Subaru Xv OBD Code

P2021 Subaru Xv Error Code Repair Process :

Common Causes of Subaru Xv P2021 OBD2 Code

P2021 code for other Subaru cars