Back to 2003 Toyota Avalon

2003 TOYOTA AVALON

3.0L V6FWDAUTOMATICgas
2 active safety recalls on this vehicle — view recalls
Repairs0Labor470Torque2460Fluid6DTC734Battery1Maintenance0Recalls2
P0309high severityPowertrain

Cylinder 9 Misfire Detected

on 2003 Toyota Avalon 3.0L V6 · FWD

What this code means

Misfire detected in cylinder 9.

Symptoms

  • Check Engine Light
  • Rough idle

Common causes

  • Worn plug #9
  • Faulty coil #9
  • Faulty injector #9

Diagnostic steps

  1. Swap coil
  2. Inspect plug
  3. Test injector

Repair notes

Diagnose cylinder 9.

Other Powertrain codes on this vehicle

Building an app?
Free API access to all this data — 50 requests/day, no card required.
Get an API key →
Run a shop?
Manage repairs, estimates, and customers with ShopBase — $249/mo, all features included.
Try ShopBase →