P1300 — Igniter Circuit Malfunction No. 1

CAUTIONIs it safe to drive? Drive gently and get it looked at soon — it can worsen or fail inspection.

What P1300 means

This is a manufacturer-specific code — its meaning depends on the vehicle’s make (see below).

What P1300 means on specific makes

Heads up: P1300 is a manufacturer-specific code, so the same number means different things by make.

Toyota / Lexus / Scion CAUTION

The ECM didn't receive the IGF (ignition confirmation/feedback) signal back from the igniter for ignition circuit/cylinder #1, meaning a coil-on-plug or igniter isn't firing or confirming. On older Toyotas this is the external igniter module; on newer ones it's the individual coil pack.

  1. Failed ignition coil / igniter on cyl 1 ($40-120 per coil)
  2. Spark plug fouled/worn
  3. Coil connector or harness fault
  4. Rarely: ECM driver

Check first: Swap the suspect coil to another cylinder; if the misfire/code follows the coil, replace it. P1305/P1310/P1315 are the same fault on cylinders 2/3/4.

Source: troublecodes.net/p1codes/p1300, autocodes.com/p1300_toyota.html, toyotanation.com

Mitsubishi CAUTION

Fault in the ignition-timing adjustment circuit (the connector/circuit used to set/monitor base timing). Can affect timing control and set with misfire/ignition complaints on Mitsubishi engines.

  1. Ignition timing adjustment connector/wiring fault
  2. Ignition coil/igniter issue
  3. ECM-related fault (rare)

Check first: Inspect the timing-adjust circuit/connector and ignition primary; check for related misfire codes.

Source: troublecodes.net/mitsu, ricksfreeautorepairadvice.com/mitsubishi-obd2-codes

Related codes

P1305P1310P1315P0351
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