Question about 1999 Toyota Corolla

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Toyota Corolla 1999 code p0301

My engine light is on. I have checked and know that it is the misfire of the cylinder 1 and the code is p0301. I have changed the spark plung, spark plung wire and igition coil but the code still comes back. Is any one can help me to fix the problem, please?

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  • Car Fixer May 11, 2010

    Great answer, Toyota Ed. I found this searching on P0301, thought it might be worth mentioning - http://www.obd-codes.com/p0301

  • Toyota Ed May 11, 2010

    The next two steps are to determine if the inhjector is working (is it clicking with the engine running), and a compression test. You have ruled out all 3 of the main possibilities, the only thing left is injector, compression or wiring faults.

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I HAVE A COROLLA 1999 MODEL. IT IS MISFIRING. I CHANGED THE PLUGS AND CHECK ATHE INJECTORS. NOW I DONT KNOW WHAT TO DO BECAUSE THE ENGINE STILL VIBRATES AND THE CHECK LIGHT IS ON

Posted on Aug 05, 2010

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Were your plugs oily when you took them out?The reason very often is leaking valve cover gasket. If the gasket is leaking even slightly in the plugs cavities, the oil will ground the spark plug shorting the circuit and throwing misfire code. That is why, the problem reappears when you replace your spark plugs, injectors and ect. New valve cover gasket solves the problem.

Posted on Apr 15, 2013

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Faulty injector maybe?

Posted on Dec 13, 2008

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1 Answer

My car had engine codes p0300 and p0301 so I changed my spark plugs and my coil 1 now I have codes p0301 & p0304 and I don't know why any help would be greatly appreciated thanks


P0300 is random misfires. Meaning more than one cylinder was misfiring. Year make model and engine size helps. On 4 cylinders 1 and 4 fire at the same time, this would be an ignition module. On a lot of models.

Apr 01, 2016 | Cars & Trucks

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Getting trouble code p0301


Code 301 means cylinder one is not producing power.
Problem could be ignition, fuel, or mechanical.
If compression is good on all cylinders, check the fuel injector.

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What does code P0301 means the light for ceck engine is on


Code P0301 ts Cylinder 1 Misfire Detected. Check the spark plug and wire on cylinder #1.

Jul 11, 2012 | 1996 Ford Windstar

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Missing,viborating


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The vibrating tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2009 Ford F-150

1 Answer

Vehicle missing,shaking,engine light comes on


Misfire could be a number of things:
a) spark plugs - change them if used over 15K miles - inspect/regap.
b) spark plug wires - change them if over 15K miles - inspect
c) ECM (electronic control module) - test with HEI (high energy ignition) tester.

The shaking tells me that the engine is running on less than its normal compliment of cylinders - the shaking is produced by the imbalance caused in the engine by one (or more) cylinder(s)
not firing at all.

The "Check Engine" light probably is coming on due the the misfire condition. Go to Pep Boys or
Advance Auto Pats, where they'll tell you (free) your codes causing the "Check Engine' light to be
lit - the code coming from your truck's computer will probably be one or more of:
P0300 - Random/Multiple Cylinder misfire detected
P0301 - Cylinder 1 misfire detected
P0302 - Cylinder 2 misfire detected
P0303 - Cylinder 3 misfire detected
P0304 - Cylinder 4 misfire detected
P0305 - Cylinder 5 misfire detected
P0306 - Cylinder 6 misfire detected
P0307 - Cylinder 7 misfire detected
P0308 - Cylinder 8 misfire detected
P0313 - Misfire detected with low fuel

Jun 23, 2011 | 2004 Ford F150

3 Answers

CODES-PO301-PO303-PO316- CHANGED PLUGS & WIRES. STILL MISS ON START UP, GOES AWAY MOST OF THE TIME ABOVE 1000 R.P.M


P0301 - Cylinder 1 Misfire Detected.

Causes:
- Improper spark plug at cylinder #1
- Insufficient compression at cylinder #1
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #1
- Fuel injector #1 may be faulty
- Intake air leak

Solutions:
- Perform Injector Service
- Replaced Spark Plug #1
- Replaced Injector #1
- Replaced Ignition Coil #1

P0303 - Cylinder 3 Misfire Detected.
Follow info from P0301.

P0316 - Misfire Occurred In The First 1,000 Engine Revolutions.

Causes:
- Damaged CKP sensor.
- Ignition System.
- Fuel Injectors
- Running out of fuel
- Fuel Quality
- Base engine
- Damaged Powertrain Control Module

Solutions:
Usually the P0316 is combine with a P03XX codes. The P03XX code indicates in which cylinder the misfire occurred.

Jan 17, 2011 | 2002 Mercury Sable

1 Answer

WHAT IS THE CAUSE OF THE PO301 CODE?


The error code p0301 ,This code is related to misfire.The cylinder is misfiring. p0301 this is the indication of cylinder number 1 ,that is misfiring.If the code comes up as p0300 this is the indication of random misfire from all the cylinders.But in your case its indicating p0301 this is indication of cylinder 1 misfire.Check cylinder 1 and replace the faulty cylinder 1 to clear the fault.The spark plugs and the wires connecting to spark plugs also needs to be checked. Keep updated with any more query.Thanks.

Oct 12, 2010 | 2003 Mitsubishi Lancer

1 Answer

2002 Ford Ranger check engine light indicating misfire


Code P0301
Ignition Coil Pack
Ignition Cable
Spark plug
Clog or dirty fuel injector
Evap canister purge valve
Engine Compression
fuel pressure

you have 3 type of engine for your truck
2.3L 4 cylinder
3.0L 6 Cylinder
4.0L 6 Cylinder

need to know that type Engine

The reason why the service light come on because it is a hard code
not a soft code.

Let me know

Sep 20, 2009 | 2002 Ford Ranger Regular Cab

1 Answer

Code scan: P0301 Cylinder 1 misfire detected


Code P0301 is a generic OBD Code for Misfire. It also indicates you have a misfire in the #1 Cylinder. I would start by checking the plug wire to make sure its clean and on all the way (at the coil as well). Then if that doesnt help I would pull the plug out and check the condition of the spark plug. hopefully this will give you some direction. Thanks for Using FixYa!

Sincerely,

JC

Dec 03, 2008 | 2004 Jeep Wrangler

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