Recently bought a 2002 I35 and the service engine soon light is on! The computer test report shows the fault as P0300! Please advice. Thanks. Ps: I am in UAE.
SOURCE: code p0300 and p1406
P0300 is misfire and p1406 is EGR. It sounds like you have a chunk of carbon stuck in the EGR valve. Remove the valve and clean the carbon from the valve, bottom side. Then install a screened gasket so it won't happen again.
SOURCE: obd2 code p0300 on mazda protege 2002
Just had one of these with a maxima, the code is multiple random misfire, when a misfire occurs, to start is do the basics, replace the plugs, check fuel pressure, clean throttle body, and coolant is topped up. also I have seen if the O2 sensor is not working correctly is can cause a misfire, you will need a scan tool to look at what the O2 sensor is doing, o rby back probing the sensor (don't damage the O2 sensor wires). If it wires replace them as well, if it has coils they usually dont give that code if one fails, it will pinpoint that a certain coil if one fals.
SOURCE: 5 error cods on my 2002 Jetta GLS 1.8 Turbo Engine
P0420=
Catalyst System Efficiency Below Threshold Bank 1
P0300=Random/Multiple Cylinder Misfire Detected
P0301=Cylinder 1 Misfire Detected
P0172=System Too Rich Bank 1
P2181=Cooling System Performance
you need to write these down,have someone clear the codes in the car,then go for short ride and recheck which if any code reappears.it's like domino's affect,one sensor can start a chain affect with the others.
SOURCE: I have a 2002 Chevy
Basically this means that the the car's computer has
detected that not all
of the engine's cylinders are firing properly.
A P0300 diagnostic code indicates a random or multiple misfire. If
the last digit
is a number other than zero, it corresponds to the cylinder number
that is misfiring.
A P0302 code, for example, would tell you cylinder number two is
misfiring.
Unfortunately, a P0300 doesn't tell you specifically which cylinder(s)
is/are
mis-firing, nor why.
Symptoms may include:
A code P0300 may mean that one or more of the following has happened:
Possible Solutions
If there are no symptoms, the simplest thing to do is to reset the
code and
see if it comes back.
injector(s)
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.
Random misfires that jump around from one cylinder to another (read:
P030x
codes) also will set a P0300 code. The underlying cause is often
a lean fuel
condition,
which may be due to a vacuum leak in the intake manifold or unmetered
air getting
past the airflow sensor, or an EGR valve that is stuck open.
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2001 Deville intermittent service engine soon light code...
I recently bought this car from an owner who took decent care of it but a week after i bought it, the service engine light appeared. After a few
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