Toyota P1300: Igniter Circuit (Bank 1) — Fix
On Toyota vehicles, P1300 means a fault in the igniter/ignition coil circuit on bank 1 — the ECM isn't seeing a correct ignition confirmation signal.
- Applies to
- Toyota vehicles
- Est. repair cost
- $40 – $500
- Time to fix
- 30 minutes – 2 hours
What it means
Causes include a failed ignition coil/igniter, wiring/connector faults, or an ECM driver problem. P1xxx codes are manufacturer-specific — P1300 is defined by Toyota (not part of the generic SAE J2012 set), so this definition applies to Toyota vehicles. Model years can vary, so confirm against the Toyota service manual. Fix the fault, then clear the code with a scan tool.
Symptoms
- Check engine light on
- Misfire, weak spark, or hard start
- Power loss
How to fix it
- 1
Inspect the coils and wiring
1. Check the ignition coil/igniter connectors and wiring.
- 2
Test and replace
1. Test coil resistance/operation. 2. Replace a failed coil, then clear the code.
Frequently asked questions
Can a bad coil cause P1300?
Yes — a failed coil/igniter or its wiring is a common trigger. Test the coils before deeper diagnosis.
Last updated July 19, 2026
Guidance only — always consult a qualified professional or the official service manual before carrying out repairs.