P1300 on 1993-1997 Toyota Corolla (DX, LE, VE, CE, base) — Igniter Circuit Malfunction – No. 1
1 vehicles · 1 makes · $15-$700 repair
Most Reported On
P1300 is an OBD-II diagnostic trouble code meaning “Igniter Circuit Malfunction – No. 1.” Manufacturer-specific powertrain code used by Toyota and Lexus. The ECM sends an ignition timing signal (IGT) to the igniter/ignition coil and expects an ignition confirmation signal (IGF) back; when no IGF is returned for ignition circuit No. 1 (cylinder #1 on direct-ignition engines), the ECM sets P1300. The result is a dead or intermittent ignition circuit, so the engine may misfire, idle roughly, lack power, stall, or not start at all. Because P1xxx codes are manufacturer-defined, P1300 on a non-Toyota vehicle can mean something entirely different — confirm against that make's service information. This code is most commonly reported on 1993-1997 Toyota Corolla (DX, LE, VE, CE, base), with repair costs ranging from $15 to $700.
Common Causes
Typical Repair Cost
Based on 1 documented vehicle-specific issues. Actual cost depends on root cause and vehicle.
Diagnostic Tools
P1300 does not use the standard P/B/C/U prefix. It may be a manufacturer-specific code, so verify that a scanner supports your exact year, model and module before buying.
FAQ
What does P1300 mean?
P1300 stands for "Igniter Circuit Malfunction – No. 1." Manufacturer-specific powertrain code used by Toyota and Lexus. The ECM sends an ignition timing signal (IGT) to the igniter/ignition coil and expects an ignition confirmation signal (IGF) back; when no IGF is returned for ignition circuit No. 1 (cylinder #1 on direct-ignition engines), the ECM sets P1300. The result is a dead or intermittent ignition circuit, so the engine may misfire, idle roughly, lack power, stall, or not start at all. Because P1xxx codes are manufacturer-defined, P1300 on a non-Toyota vehicle can mean something entirely different — confirm against that make's service information.
What are the most common causes of P1300?
The most common causes of P1300 are: Failed ignition coil with integrated igniter on cylinder No. 1, Faulty external igniter / ignition control module (on models that use one), Damaged or corroded ignition coil connector, or an open/shorted IGT or IGF wire, Worn, fouled, or incorrectly gapped spark plug loading the coil, Poor coil ground or a chafed/shorted harness near the valve cover, Failed ECM ignition driver (uncommon — verify wiring and coils first). The specific cause varies by vehicle.
How much does it cost to fix P1300?
Repair costs for P1300 range from $15 to $700, depending on the vehicle and root cause.
Which vehicles are affected by P1300?
Au7o has documented P1300 across 1 vehicle models from 1 manufacturers: Toyota.
Content compiled with AI assistance using NHTSA complaints, TSBs, and owner reports. May contain errors. Always verify with your vehicle's service manual.