Code Definition

P0015 — Camshaft Position B - Timing Over-Retarded Bank 1

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

About P0015

P0015 is a generic (obd-ii standard) powertrain diagnostic trouble code recorded for Toyota vehicles. 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 P0015 code sets when the Engine Control Module (ECM) detects that the exhaust camshaft on Bank 1 is more retarded than the commanded target position, or that the Variable Valve Timing (VVT) phaser fails to advance exhaust cam timing when commanded. The 'B' camshaft designation refers to the exhaust cam on engines with Dual VVT, and the ECM calculates actual cam position by comparing the Bank 1 exhaust cam position sensor signal against the crankshaft reference, against a target map held in memory. Cam timing is controlled by oil pressure acting on a phaser on the exhaust cam, with the flow...

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