Question about 2001 Honda CR-V

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Changed cat p1399 code came up and random misfire codes

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Probable Causes
1- EGR block passage
2 - Valves out of range.

Posted on Mar 12, 2013

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Posted on Jan 02, 2017

  • 184 Answers

SOURCE: Random engine misfiring- fault code P0300- 1999 cutlass

Could be coil pack(s), fuel injectors, etc. Rather than retype it, just check out this great article on P0300 random misfire - http://www.obd-codes.com/p0300

Posted on Dec 15, 2008

  • 1861 Answers

SOURCE: 99 4runner 5vz-fe 3.4 misfire

Replace the coil packs.
Your issue is NOT the converter, or you would have a P0420/P0430 code

Posted on Dec 26, 2008

mecanica03
  • 881 Answers

SOURCE: My check enginr light is

this codes no much problem,maybe a momentany fuel cap unclosed, to reset disconnect the negative battery terminal few minutes , then reconnect and start engine,good luck

Posted on Apr 25, 2009

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SOURCE: diagnostic codes for 200 Daewoo Lanos..........

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Posted on Aug 24, 2009

philschneide
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SOURCE: po300 random mulitple misfire detected p1399

If only one of your cylinders was misfiring, you probably would be getting a more specific code than P1399.
Also check the distributor rotor along with the cap and coils and wires (as mrgreenz suggests); the EGR valve to make sure it doesn't leak; your fuel pressure which can cause random misfires if the pressure is too low; and injectors if they are really dirty. If you have really high mileage, I probably would first just change out the plug wires with a new set, then reset the DTC and see if the code comes back.
Hope this is helpful as well.

Posted on Nov 27, 2009

Testimonial: "I changed the plugs and put an additive to clean the fuel injectors and changed the egr valve. Still running rough when at idle"

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2003 acura tl error codes po301 po302 po304 po306 p1399 po300


PO300 and P1399 are random cylinder misfire detected.
PO301 cylinder 1 misfire
PO302 cylinder 2 misfire
PO304 cylinder 4 misfire
PO306 cylinder 6 misfire
I would say that you have damage to the ignition wiring harness or you ECM is failing.

Feb 17, 2015 | Acura Cars & Trucks

1 Answer

P0420 p1399


99 civic? ever tune it up, or run the cam belt fore ever?
you do now, ignoring the bent, ends in bent valves, right?

which engine option, cylinder count and displacment. USA 1.6L? I-4?

misfiring. ever tune it up this decade? or 60k miles? with cam belt.
1399 is misfire (let me guess, the CEL flashes )
do not skip the belt if due, or you will lunch the engine.



420 is: (ID IGNORE THIS, till the MISFIRE ENDS !!!)
Possible causes
- Three way catalyst converter Bank 1
- Exhaust tube
- Intake air leaks
- Fuel injectors may be faulty
- Fuel injector leaks
- Spark plugs may be faulty
- Improper ignition timing
- Engine Control Module (ECM)

(the bar room answer for 420 is, the CAT is weak, )
the autoshop class>? ASE.. if the cat is or was tortured (misfire)
then fix that first and pray the cat bakes dry and passes 42x codes
if bake many dry, and 420s cleared.
what happens is you overload the CAT with raw fuel, ignore it.
the CEL flashing (USA) means you are KILLING THE CAT.


now we cover, misfire
there are huge possibles.
in a big shop we connect 5 gas to tail and start there .
in a lesser shop, plenty. we check closed loop at idle
if not in closed loop at idle, we fix that first. (easy ,car is parked)
(later closed loop at 40mph light flat cruise, steady right foot) no hills.
Misfire, :
Bad engine, bent a valve> do to ignoring the belt. got vacuum bounce?
bad spark
bad injection rates, or injectors clogged ,dead or weak or leaking.

me, i watch pendings to see of P0301 , to P030x (x is cylinder num)
if the scan tools shows any misfire codes, i do a leak down
on the cylinder that misfires, 300s is random.

lots of ways, EGR stuck open
AFR runing lean, scan too sees that...
AFR stuck rich, same.
the best order is this. (no clues with extra DTCS
is:
compression test. and leak down. if smart.
spark tests.
last fueling, rates, (fails closed loop at idle spark good , engine good.
i do the the injector leak down tests. and balance,

i also do the cAT melted test. cat back pressure test
less that 2psi at 2500rpm.

Dec 31, 2013 | 1999 Honda Civic

1 Answer

Trouble Code p0420 and p1399


code po420 refers to cat converter system bank1 - efficiency below threshold===causes -- cat converter---wiring---HO2S 2
code p1399 refers to cylinder no 6 misfire===causes --fuel/ ignition---VTEC system---MAP sensor--wiring---mechanical fault.

Dec 31, 2013 | 1999 Honda Civic

1 Answer

P1399


P1399 is a random engine misfire.

Apr 11, 2012 | 2004 Honda Pilot

1 Answer

After changing out the spark plugs, wires, rotor, and rotor cap, the check engine light remains on. (Took it in to diaganostics at Auto store, they get the reading that there is still a misfire, even after...


Honda does not supply a diagnostic flow chart for this code. P1399 is a random misfire code and Honda/Acura has reported for various models that this could be caused by clogged EGR ports. In addition there is the possibility that the valve cleareance specification may be out of range

May 03, 2011 | 2001 Honda CR-V

1 Answer

Acura mdx 2001 ingine codes p1399 andp300 as well others codes 305


All these codes indicate you have a misfire on cylinder number 5.
P1399/P0300 - Random/Multiple Cylinder Misfire Detected
P0305 - Cylinder #5 Misfire Detected

Causes:
- Improper spark plug at cylinder #5
- Insufficient compression at cylinder #5
- Incorrect fuel pressure
- The injector circuit is open or shorted at cylinder #5
- Fuel injector #5 may be faulty
- Intake air leak at cylinder head

Solutions:
- Perform Injector Service
- Replace Spark Plug #5
- Replace Injector #5
- Replace Ignition Coil #5

Mar 09, 2011 | Acura MDX Cars & Trucks

1 Answer

What is scan code P1399 and how to fix the problem.


P1399- Manufactures control Ignition system OR Misfire

If only one of your cylinders was misfiring, you probably would be getting a more specific code than P1399.
Also check the distributor rotor along with the cap and coils and wires; the EGR valve to make sure it doesn't leak; your fuel pressure which can cause random misfires if the pressure is too low; and injectors if they are really dirty. If you have really high mileage, I probably would first just change out the plug wires with a new set, then reset the DTC and see if the code comes back.

Sep 30, 2010 | 2001 Honda Accord

4 Answers

Po300 random mulitple misfire detected p1399 misfire any cylinder


If only one of your cylinders was misfiring, you probably would be getting a more specific code than P1399.
Also check the distributor rotor along with the cap and coils and wires (as mrgreenz suggests); the EGR valve to make sure it doesn't leak; your fuel pressure which can cause random misfires if the pressure is too low; and injectors if they are really dirty. If you have really high mileage, I probably would first just change out the plug wires with a new set, then reset the DTC and see if the code comes back.
Hope this is helpful as well.

Nov 27, 2009 | 2000 Honda Accord

2 Answers

Have code p1399 on a 1999 acura integra 1.8 dohc


P1399- Acura = Random/Multiple Cylinder Misfire Detected

Acura forums state that It could be a coil pack or O2 sensor, or EGR.

Sep 18, 2009 | 1999 Acura Integra

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