P200A - INTAKE MANIFOLD RUNNER PERFORMANCE BANK 1
Description of DTC code P200A
The IMRC (Intake Manifold Runner Control) system regulates and controls the intake of air once it comes into the engine. When engine speed levels are low, the airflow decreases to reduce exhaust emissions. On the other hand, when the rpm increases, this system atomizes the fuel to increase engine performance through an effect created by it.
The Intake Manifold Runner Control consists of some flaps that are attached to a rod that passes through the intake ports of each of the cylinders. The movement of the flaps is uniform. They are attached to a singular rod controlled by the same actuator. It is necessary to state that each bank has a rod, actuator, and other components that operate independently of the other banks.
The PCM relies on input data from various engine sensors to calculate the required grade for the IMRC components. After the PCM has applied the necessary voltage to the circuit for the Intake Manifold Runner Control adjustments, the sensor data is monitored to verify that the changes have been successfully made. In case the PCM detects the IMRC system could not be effectively controlled, the P200A OBDII fault code will be set.
Symptoms of fault code P200A
- Check Engine light illuminated.
- Loss of fuel efficiency.
- Problems when accelerating.
- Instability during idling.
- Stored DTC codes indicating problems with the exhaust system.
Causes of OBD2 P200A
Reasons for setting the P200A OBD2 diagnostic code:
- Intake Manifold Runner Control wires or connectors may have damage, causing a short or open circuit.
- IMRC vacuum lines could have blockages.
- The vacuum supply actuator to the Intake Manifold Runner Control may be broken.
- The IMRC Sensor may be in bad condition.
Possible solutions of the DTC code P200A
To solve the P200A OBDII error code, consider this:
- To start the diagnosis, consult the Technical Service Bulletins applicable to your vehicle. Also, check that no MAF Sensor or MAP Sensor-related codes are stored. If this is the case, diagnose those codes first.
- Check the vacuum lines and hoses are properly connected. Likewise, check the connectors are properly tightened. If any of these components are worn, repair, or replace as required.
- With the key in the on position and the engine off, activate the IMRC system using the vacuum pump. Once the proper vacuum pressure has been applied to the actuator, check that the flaps may open. If they do, use a scanner to check that the system's sensors are working properly. If you observe big differences, make individual sensor tests. With a DVOM, replace the sensor that does not meet the manufacturer's requirements.
- Use the DVOM to make voltage tests on the runner control solenoid. The readings you obtain should match the data specified in the service manual, otherwise, replace it.