Code Definition

P1349 — Variable Valve Timing (VVT) System Malfunction - Bank 1

System: Powertrain  |  Type: Manufacturer-Specific  |  Make: Toyota

About P1349

P1349 is a manufacturer-specific 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 P1349 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.

P1349 is a manufacturer-specific code. The same code string on a different make may have a different meaning. Always confirm the code's definition against the vehicle's service information for the specific make and model under test.

Code Information

This Toyota DTC sets when the Engine Control Module (ECM) detects that the Variable Valve Timing (VVT) system for Bank 1 is not functioning as intended. The ECM varies intake camshaft timing by pulsing the oil control valve, which feeds engine oil to the VVT actuator on the cam sprocket, and it monitors the actual camshaft angle through the camshaft position sensor against the commanded target. This code logs when the actual cam timing fails to follow the commanded position within the specified range, indicating a hydraulic, mechanical, or electrical limitation. The driver may notice rough idl...

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