P0300 Diagnostic Code - Random Misfire
Symptoms.
Engine may stumble or miss
Engine may be hard to start
you may notice no issues
Cause
Failing spark plugs or spark plug wires
Bad coil or coil pack
Failing oxygen sensor(s)
Bad fuel injector or more than one
Stuck exhaust valve
Bad catalytic converter
EGR valve or valve passage clogging
Bad camshaft position sensor
Bad PCM or ECM
The Fix
Best first action is a tune up, new plugs, wires, inspect all hoses and wire connections then reset the code. If it returns you will need to narrow it down to a system, coils and coil packs should be tested, catalytic converters for function ( do you smell rotten eggs?). A misfire that jumps cylinders could indicate a lean condition, do you have any other codes along with the 300? this will help clue you in to the source, check valve function to make sure they are opening and closing fully.
This is probably pone of the most difficult codes to troubleshoot, so start with the basics and work your way into the more expensive options, in many cases a good old tune up solves the problem, back it up with a fuel system cleaning and see where you stand.
Trouble code P0201 means: Injector Circuit / Open - Cylinder 1 Need 2 replace Injector on cylinder 1
Error code 70 on a Renault van means there is a problem with the fuel filter. Once you change or clean it, the code will go away.
Trouble code P0420 means:Catalyst system efficiency below threshold
Trouble code P0401 means: Exhaust gas recirculation - insufficient flow detected
I know that with Chevy trucks its a dark green metallic.
DTC - 44 Oxygen sensor error (lean condition indicated)
Trouble code P0610 means: Control Module Vehicle Options Error
The error code E 30 for a CAT sit down lift truck is not listed online. However, you can call any CAT dealer and they can give you the error code reasons.
it a transmission slipping code
Diagnostic trouble code
Trouble code P0430 means:Catalyst system efficiency below threshold
In glove box along with options for truck.
Evaporative Emission Control System Malfunction
Trouble code P0101 means:Mass or volume circuit range performance problem
Ignition bypass circuit error
Problem with the signal from the Crank Sensor.
Trouble code P0113 means: IAT Sensor Circuit High Input