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P2017 is a diagnostic trouble code (DTC) for "Intake Manifold Runner Position Sensor/Switch Circuit High Bank1". This can happen for multiple reasons and a mechanic needs to diagnose the specific cause for this code to be triggered in your situation. Our certified mobile mechanics can come to your home or office to perform the Check Engine Light diagnostic for $70.00. Once we are able to diagnose the problem, you will be provided with an upfront quote for the recommended fix and receive $30.00 off as a credit towards the repair. All our repairs are backed by our 12-month / 12,000-mile warranty.
Intake Manifold Runner Position Sensor/Switch Circuit High Bank1
The runner position sensor, also known as the runner valve, controls the volume of air entering the intake manifold. The runner valve controls a flap in the intake manifold, which will open or close depending on the air requirements of the engine. If code P2017 sets, it indicates that the runner valve is not closing and opening as required by the Engine Control Module (ECM); the correlation between the ECM and runner valve is out of sequence.
The runner valve is essentially a second throttle body butterfly plate for the air intake system. It is designed to help optimize the air-fuel ratio (AFR) of the engine. The runner valve will open or close in order to allow the air to enter the engine faster or slower.
For example, if the the engine is increasing speed from a stopped position, the runner valve will slightly close the flaps in order for the air to enter the engine faster, which will in turn help the vehicle gain speed faster, but restrict fuel consumption. As the RPM’s increase, the engine will suck in more air and eventually, the benefits of the slightly closed flaps will hinder the engine performance instead of helping it. When this plateau happens, the flaps will open up wider.
The flaps are closed at lower speeds because the RPM is low, as is the amount of air entering the engine. The intake manifold has many big ports which take a long time to fill up because of their large size. The faster the intake manifold can fill up with air, the faster the acceleration will be, and the more economic the air-fuel ratio.
However, it is scientific fact that air can move faster through smaller spaces versus larger spaces. To take advantage of that, there were electronically controlled flaps designed into some intake manifolds to help fill up the intake manifold with air faster and to get air into the combustion chamber faster. The flaps will open or close depending on the current needs of the engine. If code P2017, sets there may be an issue with the operation of the flaps in the engine, which are controlled by the runner valve.
Removes the intake manifold and inspects it for carbon buildup and other defects
Tests the intake manifold control solenoid with a multimeter to ensure it has adequate ground and voltage
Uses a multimeter to measure the resistance of the intake manifold control solenoid
Inspects the condition of the mass airflow sensor for oil or dirt
Inspects the circuit of the intake manifold control solenoid to the ECM for opens, shorts, frayed wiring, corrosion or broken connections
All too often, the ECM is assumed to be at fault. In this case the ECM is usually the last thing to be at fault. It is suggested to exhaust all probable causes before deeming the ECM faulty.
This code will usually not be very serious. I have never heard of any cases in which it was serious or severely damaging. However, keep in mind that, with a Check Engine Light illumination, you can not legally pass inspection until the cause of the light is addressed.
The leading and most likely fix for this trouble code is to clean the throttle body and intake manifold.
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