Toyota P1349: VVT System (Bank 1) — Fix
On Toyota vehicles, P1349 means a fault in the variable valve timing (VVT/VVT-i) system on bank 1 — the cam timing isn't responding as commanded.
- Applies to
- Toyota vehicles
- Est. repair cost
- $50 – $800
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a stuck VVT oil-control valve, dirty/low oil, a failed cam phaser, or wiring faults. P1xxx codes are manufacturer-specific — P1349 is defined by Toyota (not part of the generic SAE J2012 set), so this definition applies to Toyota vehicles. Model years can vary, so confirm against the Toyota service manual. Fix the fault, then clear the code with a scan tool.
Symptoms
- Check engine light on
- Rough idle or reduced power
- Possible start-up rattle
How to fix it
- 1
Check oil and the VVT valve
1. Confirm oil level/condition — VVT-i relies on clean oil. 2. Test/clean the VVT oil-control valve.
- 2
Inspect phaser/timing
1. If the valve is good, inspect the cam phaser and timing. 2. Repair, then clear the code.
Frequently asked questions
Can dirty oil cause P1349?
Yes — Toyota VVT-i is very sensitive to oil condition. Fresh oil and a clean oil-control valve are the common fixes.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.