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Steve 11/23/2021

2000 Toyota Camry LE 6 Cyl 3.00L


Trouble codes P0300, P0302, P0305

Started yesterday, noticed decreased acceleration. Hooked up my analyzer and got trouble codes P0300, P0302, and P0305. Misfiring on cyls. 2 & 5. Does this correlate to a specific coil pack? If so, what kind of job is this? NOTE: the plug wires and plugs also should be replace

1 Answer


Jimm 11/27/2021

For the misfires:P0300, P0302, P0305...
It may mean that one or more of the following has happened:

Faulty spark plug or wire
Faulty coil (pack)
Faulty oxygen sensor(s)
Faulty fuel injector
Burned exhaust valve
Faulty catalytic converter(s)
Running out of fuel
Poor compression
Defective computer

Possible Solutions

If there are no symptoms, the simplest thing to do is to reset the code and see if it comes back.

If there are symptoms such as the engine is stumbling or hesitating, check all wiring and connectors that lead to the cylinders (i.e. spark plugs). Depending on how long the ignition components have been in the car, it may be a good idea to replace them as part of your regular maintenance schedule.
I would suggest spark plugs, spark plug wires, distributor cap, and rotor (if applicable). Otherwise, check the coils (a.k.a. coil packs). In some cases, the catalytic converter has gone bad. If you smell rotten eggs in the exhaust, your cat converter needs to be replaced. I've also heard in other cases the problems were faulty fuel injectors.


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