Intake Manifold Runner Position Sensor/Switch Circuit Bank 2
The P2019 code indicates that the Powertrain Control Module (PCM) has detected an electrical malfunction or out-of-range signal in the intake manifold runner position sensor or switch circuit for Bank 2. Bank 2 refers to the side of the engine that does not contain cylinder number one.
While the vehicle will typically remain drivable, the engine may experience reduced performance and fuel efficiency. It should be diagnosed and repaired soon to restore proper engine operation and prevent potential long-term emissions issues.
Common symptoms
- Illuminated Check Engine Light
- Rough engine idle
- Reduced engine power or hesitation during acceleration
- Decreased fuel economy
- Poor low-end engine torque
Likely causes
- Faulty intake manifold runner position sensor/switch (Bank 2)
- Damaged, corroded, or loose wiring and connectors in the sensor circuit
- Carbon buildup or mechanical binding in the intake manifold runner flaps
- Vacuum leaks affecting the intake manifold runner control actuator
- Faulty intake manifold runner control actuator
- Malfunctioning Powertrain Control Module (PCM) (rare)
What to check before replacing parts
Scan for additional codes and record freeze frame data.
Look for: Check if other codes related to Bank 2 or the IMRC system are present, which can help isolate the issue to a specific circuit or mechanical binding.
Visually inspect the wiring and connectors for the Bank 2 intake manifold runner position sensor.
Look for: Look for frayed wires, melted insulation, corrosion, or loose connections that could interrupt the circuit.
Test the intake manifold runner position sensor using a digital multimeter.
Look for: Verify that the sensor's resistance and voltage output match the manufacturer's specifications as the runner valve opens and closes.
Manually actuate the intake manifold runner flaps for Bank 2.
Look for: Feel for mechanical binding, sticking, or excessive resistance caused by carbon buildup or broken linkage.
Check the vacuum lines and actuator (if vacuum-operated) for leaks or proper operation.
Look for: Ensure the actuator holds vacuum and moves the linkage smoothly without hesitation when vacuum is applied.
This page explains the generic P2019 definition and is general reference information, not a diagnosis for your specific vehicle. Actual causes, severity, and repairs vary by make, model, engine, and mileage — always confirm with a scan tool and a qualified technician before replacing parts.
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