Question about 2003 Ford Focus

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2003 ford focus codes p0316,p0300,p0302,p0303

Codes p0316,p0300 how to fix

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I had a similar problem with my '02 Focus. I found the actual wires leading to the harness had broken. From the codes I would say you have lost a good connection with cylinders 2 and 3. My Focus started to hesitate and jump until normal temps were reached. Then it jumped and hesitated all the time. I went to the junk yard and got a replacement wire set for $3. I cut the current ones out and used heat shrink and electrical tape to reconnect the new. Worked like magic.

Here is an excerpt from the code problem below. Good luck

- Ignition coils harness is open or shorted
- Ignition coils circuit poor electrical connection
Read more: http://engine-codes.com/p0300_ford.html#ixzz3AEUWtCDs

Posted on Aug 13, 2014

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Posted on Jan 02, 2017

  • 7353 Answers

SOURCE: I have a 2005 ford ranger 3.0L with repetitive engine codes

these engines did have some exh valve issues, service bulletin 05-26-3. one other thing to verify is that the cam synronizer (CMP) is correctly installed. if its not right on, its way off.

Posted on Oct 14, 2009

  • 135 Answers

SOURCE: i have a 2007 ford

check spark plug wires and coil packs

Posted on Aug 21, 2011

  • 22 Answers

SOURCE: enigine light is on, I have replaced the spark

try replacing the DPFE, go to the ford dealer and take them your VIN and ask them for a DPFE, your egr valve is sticking open due to the failure of the DPFE and causing multiple misfires in your engine

Posted on Oct 27, 2011

SOURCE: I have a 2003 Ford Explorer that is misfiring with a code of p0300, p0303 and p0316

The 300 is random misfires & the 316 is misfires on the first
1000 revolutions,such as when the motor is first started

Your only working on cylinder #3 the PO303

If you have individual cop coils,replace that one

If you have a motor with a module for several cyclinders,
then you may be best to have a shop diagnose,so as
not to waste money on the wrong parts

Posted on Nov 18, 2012

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2003 jeep liberty 3.7 code po300, po302 what does this mean


These numbers are OBD codes. They are misfire coding.
There is a youtube video to assist with troubleshooting.
Trouble shooting misfire Code P0300 P0301 P0302 P0303 P0304 P0305 P0306...

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98 dodge ram 1500 5.9L 2wd codes P0300, P0301, P0302, P0303, P0171. What all do I need to do to resolve??


the p0300--p0301-p0302=p0303 are misfire codes and can mean needs tune up or wiring problem and p0171 is system to lean bank 1 with this code if you correct it will probably correct the misfire codes your receiving
http://www.obd-codes.com/p0171 Fixing Hesitating Car P0171 Code YouTube P0171 System Too Lean Bank 1

Aug 26, 2016 | Dodge Cars & Trucks

1 Answer

What are the probable causes of DTC P0316?


The P0316 DTC code is a generic code that applies to all vehicles. This code means the powertrain control module (PCM) has detected a misfire shortly after startup, specifically within the first 1,000 revolutions. This code may also be triggered with another of the other misfire codes which are P0300, P0301, P0302, P0303, P0304, P0305, P0306, P0307, P0308, P0309, P0310, P0311, P0312. If you have another misfire trouble code also, you should diagnose and repair that code(s) first. Symptoms Symptoms of a P0316 DTC may include: MIL (Malfunction indicator lamp) illumination Rough engine start or idle Potential Causes Potential causes of this misfire code may include: Damaged or defective Crankshaft Position Sensor (CKP) CKP sensor wiring or connector fault Poor fuel quality Ran out of fuel Ignition system malfunction Fuel system malfunction: injector or fuel pump Mechanical engine problem Damaged PCM Possible Solutions First off, you'll want to repair any other misfire DTC codes if present prior to diagnosing this code. If you own a Ford vehicle and you have a P0316 along with one of the other misfire codes, you should check for appropriate TSBs (technical service bulletins), as there are some TSBs that in part involve reprogramming the PCM. Doing that requires specialized equipment. Some Ford vehicles even needed a new cylinder head as a result of the valve. Regardless, if you have a Ford with multiple misfire codes including this one, check for TSBs. If the P0316 is the only code, then it's time to do a bit more diagnosing of the crankshaft and camshaft position sensors, and their associated connectors and wiring. A tip we've found is "Since this code indicates a start up misfire, pay attention to items which may expand or contract when cold (if the code sets when the engine is cold), or hot (if the code sets on a hot restart)." Realistically, the freeze frame data from the PCM will be helpful in tracking down the problem. As will a good DVOM (digital volt-ohm meter), so you can perform tests on the wiring and the sensors.

Read more at: http://www.obd-codes.com/p0316
Copyright OBD-Codes.com

Dec 10, 2015 | 2003 Ford Taurus

1 Answer

I have a 2003 Ford Explorer that is misfiring with a code of p0300, p0303 and p0316


The 300 is random misfires & the 316 is misfires on the first
1000 revolutions,such as when the motor is first started

Your only working on cylinder #3 the PO303

If you have individual cop coils,replace that one

If you have a motor with a module for several cyclinders,
then you may be best to have a shop diagnose,so as
not to waste money on the wrong parts

Nov 18, 2012 | 2003 Ford Explorer

2 Answers

P0300 P0301 P0302 P0303 P0304


Have you had somebody clear the codes after you installed the parts.If not the codes have to be erased by using a scan tool.

May 05, 2012 | 1998 Dodge Neon

1 Answer

2004 ford explorer sport tracs cylinder 1 misfire


The coil-on-plug. These are common to fail. #1 is easy to get to, all you need is a 7mm socket, an extension, and a ratchet. P0301 tells you that cyl.#1 is not firing everytime it is asked to, P0316 means that during the first 1000 revolutions when you start your truck, there was a misfire. To be sure about the coil, swap the coils with the one next to #1. Clear the codes and wait for the codes to return. If the code P030_ shows up, (P0302 if you swapped it with #2, P0303 for #3, for example) Then remove that coil and get you another!

Feb 01, 2012 | 2004 Ford Explorer

1 Answer

Enigine light is on, I have replaced the spark plugs, wires, Coil pac, and IAC valve and the light is still on. What can be the problem? Its a 2003 Ford Explorer XLT and the codes that I have are p0316,...


try replacing the DPFE, go to the ford dealer and take them your VIN and ask them for a DPFE, your egr valve is sticking open due to the failure of the DPFE and causing multiple misfires in your engine

Oct 04, 2011 | 2003 Ford Explorer

2 Answers

I have a 2005 ford ranger 3.0L with repetitive engine codes


these engines did have some exh valve issues, service bulletin 05-26-3. one other thing to verify is that the cam synronizer (CMP) is correctly installed. if its not right on, its way off.

Oct 14, 2009 | 2005 Ford Ranger

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