P1340 Ignition Control - Cylinder No. 8 Circuit Malfunction

Category: Powertrain - Ignition
Severity: Check Engine Light
Applies to: Tundra, Sequoia, Land Cruiser V8

What does P1340 mean on a Toyota?

P1340 — Ignition Control - Cylinder No. 8 Circuit Malfunction. This Toyota-enhanced code applies to Tundra, Sequoia, Land Cruiser V8.

Common causes of P1340

Failed cylinder 8 coil
Open wiring
Fouled plug
Corroded connector
ECM fault

How to fix P1340

Swap the cylinder 8 coil
Inspect the plug
Test wiring continuity
Check connectors
Replace the coil per swap data