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

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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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What would cause a 2004 Ford Taurus to have codes p0300 and p0316?


The P0300 is a general misfire code, and can be a result of numerous things. Coils, wires, plugs, injectors, sensors, mechanical issues etc. Being that you are throwing a P0316 in conjunction with the P0300, I would think that they are related, but rather than throw money at the vehicle>, do a few things first.
Replace your plug wires, chances are they are at, or close to the end of their life,Check the connector going to the CPS for corrosion or a poor connection. Clear the codes and see if the P0300 and P0316 codes come back.In the event that the codes do come back, or just one of them, you can rule out the possibility of the plugs and wires and move on to more possibilities.If the scanner you are using has the ability to monitor misfires, this could be a helpful tool to identify which cylinder(s) the misfire(s) is/are isolated to.In the event the spark plug wires don't fix your issue, and it is isolated to a specific cylinder, or group of cylinders it could tell you where to look next.

Feb 28, 2015 | 2004 Ford Taurus

1 Answer

Code p0316 also p0300 truck has no power


P0300 is a random misfire and P0316 is misfire at start-up.
If you have the V6, I would start by replacing the plugs and all the coils.
This is a little ******* the V6, since you have to remove the intake manifold, and the coils can be expensive. Coils are available on Ebay.
I've replaced all the coils on my 2002 Escape V6 after 100,000 miles. Typical V6 problem.

Generally, the issue could be the following from: http://www.obd-codes.com/p0300

A code P0300 may mean that one or more of the following has happened:

  • Faulty spark plugs or wires
  • Faulty coil (pack)
  • Faulty oxygen sensor(s)
  • Faulty fuel injector(s)
  • Burned exhaust valve
  • Faulty catalytic converter(s)
  • Stuck/blocked EGR valve / passages
  • Faulty camshaft position sensor
  • Defective computer

Sep 09, 2011 | 2004 Ford Escape

2 Answers

Got a p0300 and a p0316 code on my 03 navigator it is running rough and losing power


CODE PO300 - RANDOM MISFIRE DETECTED. POSSIBLE CAUSES ENGINE HAS A MECHANICAL FAULT.CLOGGED OR FAULTY FUEL INJECTORS.FUEL PRESSURE TOO LOW OR HIGH FUEL SUPPLY CONTAMINATED.EVAP CANISTER FUEL SOAKED.EGR VALVE IS STUCK OPEN OR THE PCV VALVE SYSTEM HAS A VACUUM LEAK.COULD HAVE FAULTY IGNITION COIL OR BAD SPARK PLUG. MAF SENSOR CONTAMINATED IT CAN CAUSE VERY LEAN FUEL CONDITIONS. CODE PO316 - MISFIRE IN THE FIRST 1000 REVOLUTIONS

Aug 29, 2011 | 2003 Lincoln Aviator

1 Answer

Missing, running very rough at idle-very low idle. Engine codes P0011, P0022, P0171, P0300, P0305, P0307, P0316, P2198.


the P0011 and P0022 are the camshaft sensors (both sides) are over advanced--common problem on Fords, and is usually a defective VCT solenoid (variable cam timing solenoid)-it will cause your other codes (P0300 random misfire), P0305 (#5 cylinder), P0307 (#7), P0316 (misfire at startup)-P0171 is a lean condition on side 1, where #1 plug is located (look for a vacuum leak, but a faulty VCT could also cause this)-is there any chance the last oil change set this off? The proper viscosity is very important and may have caused these codes.

The P2198 is O2 sensor signal stuck rich bank 2 sensor 1. Has the engine or sensors recently gotten a bath in oil (seafoam?)-this code indicates something of possibly an over zealous maintenance procedure could have damaged maybe the MAP sensor, or more.... Unfortunately, you have a lot of company. At least you didn't crack a piston or hydrolock the engine. Seafoam is pale oil, naptha, and alcohol. With more detail there should be a reason for all those somewhat related codes-post more information.

Jan 26, 2011 | 2004 Ford F150

3 Answers

2003 Ford Ranger 4x4 extended cab- diagnostics checked and got these codes- P0171, P0174, P0300, P0316. Can you tell me what they mean?


P0171------ system too lean bank#1
Po174------ system too lean bank#2
For these 2 codes, try cleaning the maf sensor (mass air flow), that is mounted in the big black hose that goes from the air filter housing to the throttle plate, if it is dirty, that will cause those 02 sensors to send a signal to the computor to lean the air fuel mixture. If cleaning it doesn't work, the sensors will probably need changing.
P0300---- Random/multiple cylinder misfire
P0316---- Cylinder misfire at start up---- first 100 revolutions.
On those 2 codes, you have to do some testing to find out why there is a misfire.
Possible causes:
dirty/malfunctioning injectors
weak coil pack
fowling spark plugs/wires
Low fuel pressure

May 11, 2010 | 2003 Ford Ranger Regular Cab

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

1 Answer

Can't read misfire codes


The code P0300 is a random misfire code which means any cylinder and the code P0316 means that there is a misfire code set within the first 1000 revolutions of the engine. Good luck with this problem.

May 04, 2009 | 2003 Ford Taurus

1 Answer

Can


P0300 is a random misfire code and P0316 is a misfire detected in the first 100 revolutions could be plugs or coil, wires? How many miles and was it ever tuned?

May 04, 2009 | Ford Taurus Cars & Trucks

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