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Code P1346? Previous owner didn’t mention VVT malfunction fault?

Tiny
BLACKECHOGANG
  • MEMBER
  • 2004 TOYOTA VITZ
  • 1.5L
  • 4 CYL
  • 2WD
  • MANUAL
  • 145,000 MILES
Previous owner didn’t mention VVT malfunction fault, however no CEL was illuminated. Assumed OCV was faulty which I then replaced and checked filter which was clean and problem still persists, recently replaced timing chain and found after 5 mins of driving CEL appears fault to match P1346. I have checked the wire to OCV and I’m getting 12V. Performance does feel slightly lesser after timing chain replacement. I’m guessing timing might be off or potential ECM problem.
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Thursday, January 2nd, 2025 AT 2:50 AM

1 Reply

Tiny
MECHTRIX
  • MECHANIC
  • 69 POSTS
Id say pull the valve cover off to see if the chain has skipped a tooth also the chain tentioner could be worn out or the actual VVT unit itself that's mounted on the cam shaft. Good luck.
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Thursday, January 2nd, 2025 AT 5:20 PM

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