This is one of the most frequent OBD2 trouble codes. Read the full article below to know what it means, how to fix it, and what other codes may show related to it.
P200A is an OBD-II Code that refers to Intake Manifold Runner Performance Bank 1
A P200A code is a generic diagnostic trouble code that occurs when the PCM/ECM detects a signal voltage input indicating an issue with the intake manifold runner performance on bank 1. Airflow is restricted at lower engine RPM levels to reduce exhaust emissions and so the IMRC flaps cause swirling effects at higher engine speeds to increase fuel atomization and improve performance. The PCM employs a variety of engine sensor readings to calculate the ideal amount of IMRC system components to request.
Code P200A will be stored if the PCM detects that the IMRC system is unable to be controlled.
Common causes for this code include:
- Bad HO2S Bank 2 Sensor 1
- Bank 2 Sensor 1 is shorted or open Bank 2 Sensor 1 harness
- HO2S Bank 2 Sensor 1 circuit has poor electrical connection
- Faulty PCM (rare)
The symptoms of a P200A code are:
- Illuminated Check Engine Light
- Reduced fuel efficiency
- Poor engine performance
- Lean exhaust
- Poor or delayed acceleration
- Rough idle
To diagnose a P200A DTC code, a technician would:
- Scan for codes in the ECM and look at the freeze frame data for failure.
- Visually inspect the HO2S Bank 2 Sensor 1
- Check the HO2S Bank 2 Sensor 1 harness for damage or corrosion.
- Test the HO2S Bank 2 Sensor 1 signal voltage.
- Check the PCM for fault codes.
- Check the wiring and connectors for poor connection.
- Clearing the code and road testing to see if it returns will also help verify the diagnosis
The following are some of the most common mistakes that a technician may make when diagnosing a P200A code:
- Not thoroughly inspecting all the wiring and connectors.
- Not checking the signal voltage on the HO2S Bank 2 Sensor 1.
- Not checking for fault codes in the PCM.
- Not clearing the codes and road testing to see if the code returns.
How serious is this?
A P200A code is a serious code that can lead to many problems if not diagnosed and repaired quickly. If the code is not repaired, it could lead to engine damage or a complete engine shut down.
What repairs can fix the code?
The following are solutions that may fix this problem:
- Repair or replace your intake manifold
- Mend or restore your intake manifold runner control
- Manifold absolute pressure (MAP) sensor repaired or replaced
- Faulty PCM/ECM
A P200A is related to and may be accompanied by the following codes:
In conclusion, the P200A code is a diagnostic trouble code that refers to a problem with the intake manifold runner performance on bank 1. The code is caused by a variety of factors, including a bad HO2S Bank 2 Sensor 1, a faulty PCM, or poor electrical connections. Symptoms of this code include illuminated check engine light, reduced fuel efficiency, and poor engine performance. To properly diagnose and fix the problem, a technician would need to thoroughly inspect the wiring and connectors, test the signal voltage on the HO2S Bank 2 Sensor 1, and check for fault codes in the PCM.