OBD-II Code
P1300
Severity
Not yet reviewed
Nobody on our side has assessed this code yet, so we are not going to guess at how serious it is.
Can you drive it
We cannot say
Treat it as unknown until a shop reads it with live data. If the check-engine light is FLASHING, stop driving as soon as it is safe to — that means an active misfire, whatever the code.
Indicative cost (USD)
$90–$640
From this code's diagnostic notes. Varies by vehicle, diagnosis, parts, and local labor. This is not a repair quote.
P1300 on Toyota is an Igniter Circuit Malfunction, set when the ECM does not see the expected IGF (ignition confirmation) feedback pulse from the igniter after firing an IGT (ignition trigger) command to a coil.
How a shop works this
Work from evidence to part, not the other way round. A code names a circuit or a symptom; it does not name the part that failed.
Note every code that is set, not just this one.
Codes that appear together usually narrow the cause faster than any one of them read alone.
Read the freeze frame — the conditions the fault was recorded under.
Cold or warm, idle or load, road speed and engine speed. A fault that only appears cold is a different fault from one that only appears under load, even with the same code on the scanner.
Confirm the fault is current rather than history.
Clear the code and see whether it returns under those same conditions. A code that does not come back may have been logged during a repair, a flat battery, or a bad connection that has since been disturbed.
Then follow the diagnostic notes further down this page, in the order they are written.
They are written in the order a shop works this code, cheapest checks first. Where they name a component, inspect its wiring and connector before replacing it.
If the code comes back after a repair, the underlying fault is still there. That is the point to bring in a scanner with live data and freeze-frame, or a shop that has one.
Common symptoms
- Check engine light
Read the full diagnostic procedureP1300 on Toyota is an Igniter Circuit Malfunction, set when the ECM does not see the expected IGF (ignition confirmation) feedback pulse from the ign…
P1300 on Toyota is an Igniter Circuit Malfunction, set when the ECM does not see the expected IGF (ignition confirmation) feedback pulse from the igniter after firing an IGT (ignition trigger) command to a coil. On older distributor-and-igniter Toyotas (1990s 5S-FE, 3S-GTE, 7M-GE, 2JZ-GE) the igniter is a standalone module bolted to the distributor or inner fender; on coil-on-plug Toyotas the igniter is integrated into each coil pack and P1300 fires only for cylinder 1's circuit.
Start cheap
pull the coil or igniter connector, inspect for melted plastic or green corrosion on the IGT and IGF pins, swap coil 1 with coil 3 to see if the fault follows the coil, and verify a clean ground at the igniter ground stud (resistance to battery negative should be under 0.5 ohms). Then check IGT pulse with a noid light or scope; you should see a clean 5V square wave at cranking. The expensive misdiagnosis is replacing all four or six coils, then the ECM, when the real fault is a corroded igniter ground at the cylinder head, a broken IGF return wire under the intake plenum, or carbon-tracked spark plug boots arcing the IGF signal to ground.
Vehicle-specific patternsToyota 3S-GTE turbo (MR2 Turbo, Celica All-Trac 1990-1999) is the classic P1300 platform; the fender-mounted igniter (Toyota part 89621-26010 or simi…
Toyota 3S-GTE turbo (MR2 Turbo, Celica All-Trac 1990-1999) is the classic P1300 platform; the fender-mounted igniter (Toyota part 89621-26010 or similar) cooks from underhood heat and typically fails between 100k and 180k miles. Toyota 2JZ-GE and 2JZ-GTE (Supra, GS300, IS300 1993-2005) sets P1300 from the coil-pack-integrated igniter on cylinder 1 or from a chafed IGF wire where the harness crosses the valve cover bolts. Toyota 1MZ-FE 3.0L V6 (Camry, Avalon, ES300 1994-2003) sees P1300 most often from the igniter mounted on the air-intake side of the engine bay, which is a $60 to $90 OE part replacement. Toyota 5S-FE 2.2L (Camry, Celica 1992-2001) typically sets P1300 from distributor cap moisture intrusion or igniter failure.
Estimated repair$90 to $640.
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