Description of DTC code P2020

The DTC P2020 OBDII code is related to the value provided by the IMRC (Intake Manifold Runner Control) Sensor. This sensor is usually located at one end of the intake manifold and is intended to assist the vehicle computer in controlling the amount of air entering the engine at higher RPMs. If the IMRC Sensor does not work as expected, this code is set.

This code is configured for bank 2. That is, the side of the engine where cylinder number 1 is not located. The reasons for setting this code may be due to mechanical or electrical failures, depending on the vehicle manufacturer.

Symptoms of fault code P2020

  • Illuminated Check Engine lamp.
  • The engine loses power.
  • Increased fuel consumption.
  • Occasional misfires.

Causes of OBD2 P2020

The reasons for establishing the P2020 OBD2 diagnostic code are

  • The throttle body plates may be stuck or defective.
  • The Intake Manifold Runner Control Sensor (IMRC) actuator bank may be damaged.
  • IMRC sensor in bad condition.

Possible solutions of the DTC code P2020

The steps for a correct diagnosis and solution of the failures associated with the problem code P2020 OBDII are

  • Check the Service Bulletins that correspond to your vehicle model.
  • Before proceeding with the diagnosis of the P2020 DTC code, you must check that no other codes are set. If there are, diagnose and repair these codes first.
  • Make sure there are no inlet or vacuum leaks.
  • Check IMRC Sensor cables and connectors for damage such as wear, burn, or corrosion. Repair or replace any deficiencies.
  • Perform voltage tests of the Intake Manifold Slide Control Sensor. You can use a scanner to control the sensor voltage or a digital volt-ohm meter with which you can monitor the sensor input. The readings obtained should be compared with the data given by the manufacturer. Repair if there are any differences.
  • Replace the IMRC Sensor.

Codes related to P2020

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