Code Definition

P0014 — Camshaft Position B - Timing Over-Advanced or System Performance Bank 1

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

About P0014

P0014 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 P0014 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 P0014 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 P0014 code sets when the Engine Control Module (ECM) detects that the exhaust camshaft on Bank 1 is more advanced than the commanded target position, or when the Variable Valve Timing (VVT) phaser response falls outside the learned performance window. The 'B' camshaft designation refers to the exhaust cam on engines with Dual VVT, and the ECM calculates cam advance by comparing the Bank 1 exhaust cam position sensor signal against the crankshaft reference, matching it to a target map held in memory. Phaser movement is controlled by oil pressure metered through an Oil Control Valve (OCV) dr...

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