Most obdii codes are multi-digit, such as po300,po301,po302, etc. Etc. Po300's are usally misfire codes pertaining to the same cylinder...code po302 is a misfire in cylinder #2. A po300 code is a random misfire for any cylinder
Stop by http://www.coloradofans.com there are different people that have had that problem. you can probably message them personally and see how they got to that problem. P0300= Random/ multiple cylinder misfire detected P0301= Misfire detected- cylinder #1 P0302= Misfire detected- cylinder #2 P0303= Misfire detected- cylinder #3 P0304= Misfire detected- cylinder #4 p0305= Misfire detected- cylinder #5 P.S. These are Diagnostic trouble codes, not vechicle id numbers.
Auto Zone will check your computer codes for FREE...
A single cylinder misfire can trigger multiple diagnostic trouble codes (DTCs) because the vehicle's engine control unit (ECU) monitors various systems and parameters. When a misfire occurs, the ECU detects issues such as fuel delivery, ignition timing, or exhaust emissions associated with that cylinder, leading to codes related to each of these systems. Additionally, the misfire can affect overall engine performance, potentially triggering codes related to broader engine operation. Thus, a single problem can cascade into several related codes being logged.
P0420 Catalytic Converter is bad p1320 misfire P0305 - Cylinder 5 Five Misfire
the code p0304 is cylinder 4 misfire detected
p300 is a misfire
I'm not positive of the P0118 but i think it has to do with the engine coolant, but the P0306 is for cylinder 6 misfire.
Have you tried wires, coils or injectors?? Depending on the mileage, a compression check may be in order also. P0300 is random misfire.. P0301 refers to cylinder #1 misfire and P0306 refers to cylinder #6 misfire. Try the simple things like wires 1st... after the compression check.
Cross-threaded spark plug.
Have it checked for codes. There will be a misfire code that will let you know what cylinder has the problem.
If you have a "check engine" light on, start with having the codes read. A misfire code can tell you which cylinder or cylinders are having problems. A misfire could be the cause of your engine vibration.