Code Definition

P0015 — Exhaust Camshaft Position - Timing Over-Retarded (Bank 1)

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

About P0015

P0015 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 P0015 is stored, the module has detected 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 P0015 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 Engine Control Module (ECM) monitors exhaust camshaft position on Bank 1 by comparing the exhaust camshaft position sensor signal against crankshaft position. DTC P0015 is set when the ECM detects that the measured exhaust camshaft angle is more retarded than the commanded position by a calibrated threshold, typically held long enough to confirm the fault is repeatable. Exhaust phasing is controlled by an Oil Control Valve (OCV) that directs pressurised engine oil to the advance or retard chambers of the cam phaser, so a failure to advance on command will set this code. Symptoms can includ...

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