Back to 2002 Lexus LS 430

2002 LEXUS LS 430

4.3L V8RWDAUTOMATICgas
Repairs0Labor591Torque5693Fluid7DTC718Battery0Maintenance0Recalls0
P1300high severityPowertrain

Igniter Circuit Malfunction No. 1

on 2002 Lexus LS 430 4.3L V8 · RWD

What this code means

The ECM is not receiving the IGF signal from ignition coil No. 1.

Symptoms

  • CEL
  • Misfire cylinder 1
  • Rough idle
  • Poor acceleration
  • Stalling

Common causes

  • Faulty ignition coil
  • Damaged coil harness
  • Poor connector
  • Bad spark plug

Diagnostic steps

  1. Test coil resistance
  2. Inspect connector
  3. Swap coils to test
  4. Check spark plug gap

Repair notes

Replace ignition coil No. 1.

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 →