Code Definition

P2016 — Intake Manifold Runner Position Sensor/Switch Circuit Low - Bank 1

System: Powertrain  |  Type: Generic (OBD-II Standard)  |  Make: Generic

About P2016

P2016 is a generic (obd-ii standard) powertrain diagnostic trouble code. It belongs to the P-prefix family of codes, which covers engine, transmission, emissions, or fuel-system faults.

When P2016 is stored, the module has detected a signal or supply voltage lower than the expected operating range; a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine; and a sensor-related fault — the reported value from the named sensor is out of spec.

Scanning & clearing: A generic OBD-II scan tool will usually read and clear powertrain (P) codes. For live data, freeze-frame capture, and bi-directional tests you may need a more capable scan tool that supports the vehicle's ECM protocol.

Because P2016 is a generic OBD-II code, its base definition is shared across manufacturers. The specific diagnostic steps, reference values, and repair procedures can vary by vehicle, and the TaT Diagnostic Assistant includes verified procedures submitted by working technicians.

Code Information

The intake manifold runner control system uses movable flaps inside the intake manifold to alter runner length or induce swirl, with a position sensor integrated into the actuator reporting flap position to the ECM as a varying voltage. P2016 sets when the ECM sees signal voltage below the lower threshold on the bank 1 position sensor circuit for a calibrated period, a condition that points to an electrical fault rather than a mechanical one. Unlike the range and performance code P2015, which indicates flaps failing to move, a circuit low fault normally means the signal wire is shorted to grou...

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