P0300 1998 TOYOTA CAMRY - Random Cylinder Misfire Condition

Possible causes

- Faulty spark plug (s) 

- Faulty ignition coil (s) 

- Clogged or faulty fuel injector (s)

- Intake air leak

- Fuel injectors harness is open or shorted

- Fuel Injectors circuit poor electrical connection

- Ignition coils harness is open or shorted

- Ignition coils circuit poor electrical connection

- Insufficient cylinders compression

- Incorrect fuel pressure

- Manifold absolute pressure sensor

- Engine coolant temp. sensor

- EGR

- ECM

When is the code detected?

The control module monitors the crankshaft speed and has detected a misfire condition

Possible symptoms

- Engine Light ON (or Service Engine Soon Warning Light)

- Lack/loss of power

- Hard start

- Engine hesitation

P0300 1998 Toyota Camry Description

When a misfire occurs, engine speed will fluctuate. If the engine speed fluctuates enough to cause the Crankshaft Position (CKP) sensor signal to vary, the Engine Control Module (ECM) can determine that a misfire is occurring.