P0302 code

Start by checking for intake leaks and if no leaks are found the next step is to replace the spark plugs on cylinder 2. If the problem persists more tests needs to be done to diagnose problem, see Possible Causes. Cylinder misfire detected. Each cylinder fires a spark plug one after another.

A spark plug is located on the top of each cylinder. This code will trigger the check engine light as follows: The misfire detection monitor, a software strategy built into the computer, is designed to detect an engine misfire. 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.

The PCM determines this information using the crankshaft position sensor and camshaft position sensor. I replaced the corresponding sensor and cleared the codes. So your code would be a PO3O2. Next thing you should do is determine if you have spark to that cylinder and how strong the spark is in kV. Misfire on cylinder number 2. One of the impressive features of OBDII systems is the ability to self-diagnose a misfire and pinpoint which cylinder has the problem.

A cylinder specific misfire indicates that either compression, appropriate fuel mixture,. But- you might get some solid tips if you have a different make. Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Guy said fuel pump changed it starts. Cause: Engine running in a positive torque condition, then the PCM detected a misfire condition in engine cylinder number (lack of spark or fuel metering, base engine). Often this from a misfire, as fuel that is not burned by the cylinder dumps into the exhaust and causes the cat to overheat with all that fuel, damaging internal components. This time it presented after the car had been running for over an hour and had idled for about minutes without moving.

This is the second time the truck has presented the cylinder misfire and the first time for the p228c. Where should I start fellas? I raised the pressure last night and cleaned all injectors. After my car started shuttering at highway speeds when I pressed the throttle, my check engine light started flashing and finally went solid.

After watching multiple videos and reading some threads,. This can mean several different things, and in this video. Be sure to double check the codes.

Check specific manufacturer pages on the site, as some of them, we list the OBDcodes on those pages for those specific vehicles. When replacing coils, the plug gets replaced as well usually due to it being fouled badly. I did a search for information on the code and tried some basic troubleshooting: 1) Checked the spark plug wires were on tight. When the misfire monitor detects a misfire, it will trigger the check engine light with the specific cylinder number as the last digit in the P030X code.

I had her take it to Autozone to have the codes pulled.

It was extremely cold in our area (probably around 15F this morning, with the garage aound 30F). I ignored the knock sensor code and saw that the cap was burned out. If the last digit is a number other than zero, it corresponds to the cylinder number that is misfiring. My Car Chip from Davis shows that the misfire seems to be occuring only right after startup, and not while at speed going down the interstate.

An easier way is to swap wire and plug from the cylinder your getting the code from to a different cylinder and see if the code changes. The car is running a little rough but not dying. Ignition system Fuel injectors Fuel pressure Running out of fuel EVAP canister purge valve Evaporative emission system Low compression Base engine problems Controle Module damaged Special Notes.

This feature search for engine misfire in a specific cylinder. While I’m very aware that this code has been encountered by many, this failure was unique in that it allowed one to witness theory truly come to life. These codes are from PowerTrain series (P0XXX, P2XXX, P34XX), Body Series (B0XXX), Chassis series (C0XXX), Network series (U0XXX, U2XXX, U3XXX).

Common causes for misfires are : Bad spark plugs. Remove them and inspect them. Replace them if necessary ($if you do it yourself). Tools needed: ratchet with various size sockets, spark plug socket, ratchet extension, spark plug gapper tool. Best Answer: Code PO3can be anything from bad plug, wire, injector, or worst case is dead cylinder.

Have your cylinder check for proper compression before doing tune up. Last month I threw a random misfire code cyl changed the plugs, cleared the code and it was back with in ten minutes. Pulled the code again, same code. Took the day off to do compression again.

Check engine light came on, then started flashing on a trip home. I bought a code reader and scanned the code. I have driven it only as necessary since.

Pull over, retighten it, and take a look at the cap to see if it has any cracks in it. Continue driving and see if the check engine light turns off. White smoke was coming from the left side of the engine along with a burning smell.

I was able to make it home and my husband did the spark plugs, coil pack and checked the wires. Nasty acceleration, so I avoided driving like normal, babied the car. I swapped plugs, replaced wires, swapped wires, etc.

The problem always stayed on cylinder 2. Also agree that the water pump should have been covered.