Variable Valve Timing System Malfunction -- Bank 2 (Toyota/Lexus)
What does P1349 mean?
The P1349 code means the vehicle's onboard diagnostic system has detected: Variable Valve Timing System Malfunction -- Bank 2 (Toyota/Lexus). This is a moderate severity code.
Common Symptoms
- Check Engine Light on
- Rough idle
- Reduced engine power
- Engine rattling noise at startup
- Poor fuel economy
Probable Causes (Ranked by Likelihood)
- Low or dirty engine oil Very High
- Failed VVT oil control valve (OCV) -- bank 2 High
- Clogged oil passages to VVT actuator Moderate
- Stretched timing chain Moderate
- Failed VVT actuator (cam phaser) Low
Step-by-Step Diagnostic Procedure
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Check engine oil level and condition -- change if overdue
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Inspect the VVT oil control valve on bank 2 for proper operation
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Clean or replace the VVT oil control valve screen filter
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Monitor VVT target vs actual position with a scan tool
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Check for timing chain rattle or excessive play
Frequently Asked Questions
Can I drive with code P1349?
You can drive short distances at lower RPMs. The VVT system on bank 2 is not operating correctly, which reduces power and efficiency. Avoid high-RPM driving.
What causes P1349 on Toyota?
Dirty or low engine oil is the most common cause. Toyota VVT systems rely on clean oil to control camshaft timing. The VVT oil control valve can also become clogged or fail.
Will an oil change fix P1349?
In many cases, yes. If the oil is old or sludgy, a fresh oil change may restore VVT operation. Use the correct oil viscosity specified by Toyota. If the code returns, the OCV may need cleaning or replacement.