P1320 Ignition Control - Cylinder No. 5 Circuit Malfunction

Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: Camry V6, Highlander, Sienna, Tundra

What does P1320 mean on a Toyota?

P1320 — Ignition Control - Cylinder No. 5 Circuit Malfunction. This Toyota-enhanced code applies to Camry V6, Highlander, Sienna, Tundra.

Common causes of P1320

Failed cylinder 5 coil
Open wiring to cylinder 5
Fouled plug (rear bank plugs wear unnoticed)
Corroded connector
ECM fault

How to fix P1320

Swap the cylinder 5 coil
Replace rear bank plugs if overdue
Test circuit continuity
Inspect connectors
Replace the coil per swap data