Code Definition

P0009 — Engine Position System Performance (Bank2)

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

About P0009

P0009 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 P0009 is stored, the module has detected a plausibility fault — the measured value is in the electrical range but is not consistent with expected operating behaviour; and a bank-specific fault, meaning it applies only to one cylinder bank of a multi-bank engine.

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 P0009 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

This code indicates an issue with the ECM detecting a variation in the mechanical timing between the crankshaft and bank two camshaft. The ECM controls the camshaft, ignition and fuel injection timing under various speeds and loads. The ECM uses the camshaft position sensor and the crankshaft position sensor to determine the camshaft timing and has detected that the camshaft position does not match the desired position. This code could be triggered by a mechanical timing fault, faulty signals received by the camshaft or crankshaft position sensors or out of date or faulty ECM software. The bes...

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