Question about 1998 Honda Accord

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VTEC System Malfunction code P1259 has appeared. ( check engine light) how do i fix this.

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  • Anonymous Aug 14, 2008

    how to fix a vtech engine on a 2000 honda odyssy



  • Anonymous Sep 24, 2008

    VTEC System Malfunction code P1259 problem. How do I fix this?

  • dstrubino Sep 24, 2008

    VTEC System Malfunction code P1259 has appeared. ( check engine light) how do i fix this. Honda civic 2003.
    Thank you in advance!


  • herzogds Sep 26, 2008

    I have a 2002 Honda Accord with the same problem.

  • lieli Sep 29, 2008

    1998 honda vtec code p1259 show up i changed the vtec spull valve new dealer still doing same problem

  • dhtri Oct 19, 2008

    Engine lamp has come on with a loss of power to the car.

  • NETSX04 Nov 04, 2008

    "Check Engine" light came on last week. Checked engine oil level and was low. Added oil, but engine light never went away. According to an Auto Zone OBD II reader, malfunction codes: P1259, P0303, & P1399 were present. I own a 2002 Honda Accord EX with 115K. Anyone figure this problem out yet?

  • haikkyo Nov 04, 2008

    Oil seemed low, I added oil, and erased code. still came back. My car would go faster at 5500rpm, but now it does not. Seems to have lost power. Can anyone tell me why the loss of power and the P1259 code?

  • VoodooZ Nov 18, 2008

    Same thing here on a 2002 accord ex 4cyl manual.
    The car has been sluggish on acceleration with a strong shaking sometimes.
    And recently the MIL came on with P1259... so I'm hoping this is a lead to my performance/shaking issue.


  • haikkyo Nov 20, 2008

    I had the timing belt changed by the dealer about 2 months ago with no problems

  • Anonymous Dec 13, 2008

    I have the same problem with a 2002 honda-crv. Did reset on it a couple of times even after an oil change and the CEL still turns on.

  • maynard81308 Jan 05, 2009

    my cars check engine light comes on sporadically. it has failed state inspection due to the code P1259 manufacturer controlled fuel and air metering. i've looked all over the web trying to find out what exactly the problem may be and how tho fix it. i found something telling me that it has something to do with the VTEC, possibly the wiring to the selenoid. i have been unsuccessful in finding anything that could even tell me where to locate the selenoid or any of the wiring to it

  • benstewart Jan 28, 2009

    I need to know where the oil pressure switch (vtec control valve ?)is applicable on the engine block/other area to replace. Already replaced sending unit and knock sensor and don't see where this connection is.

  • tonywelly Mar 09, 2009

    honda 1.7 vtec stream cars jutters and feels like it has no power especially around the 2000rpm mark ecu light has been on 3 times each time i have paid to turn it off keep getting told its the p1259 code but no one knows what is causing it to miss fire changed spark plugs been to honda dealer and told to check the oil done that added more oil still same problem any ideas



  • Liz O Mar 16, 2009

    VTEC System Malfunction code P1259 has appeared on my 2002 honda accord ex ( check engine light) how do i fix this?

  • fmisc May 05, 2009

    1999 Honda Accord just had vtec pressure valve and ERG sensor changed, but car is still experiencing higher than usual rpms at lower speeds (40 mph or less) with sudden deceleration in power and "lurching". Mechanic is trying to tell me that's just the vtech system & nothing is wrong, but I've never experienced this in 9 yrs of owning the car. Any suggestions?

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13 Answers

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I have a 2002 Accord. Owned for 5 years, no problems ever. Had oil changed at Grease Monkey and everything was good. Later the same day the check engine light and TCS light come on. Car runs and drives perfect up to 3500 rpm and then the engine begins to pulsate. Continues to do this as long as its at 3500 rpm. Same symptoms when in neutral. Took to Checker, used code reader, came up with P1259 - VTech System Malfunction. What has happened and how can I fix this? Any input would be greatly appreciated. 

Posted on Nov 14, 2009

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  • Robert Wilson
    Robert Wilson Sep 03, 2014

    what type of oil did you have put in? honda did not recommend synthetic engine oil in there engine. the oil pump will have trouble building up oil pressure because the oil syntentic oil is slicker than conventional engine oil. if yo did use synthetic ol change it and use conventional engine oil.

  • James Fenton III
    James Fenton III Jan 22, 2015

    Low oil level will exibit the same symptoms check my answer at the bottom of page, I don't know why topping the system off with atf would help, unless it was low on oil in the first place. Start by checking fluid levels, and watch out for novice mechanics, or those that don't conduct an examination of the vehicle first. Atf really? Sad Sad Sad. visual inspection first repair action second. Enough said.

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Low oil level can cause this as well as a bad oil pressure switch for VTEC control, possible VTEC solenoid.

Posted on Jan 10, 2009

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I have a 1998 honda accord lx that is having this same problem. check engine light cames on a long time ago so i had a diagnostic ran on it and got the code p1259. i was having my oil changed at the same time this was discovered. i am a woman and in no way mechanically inclined. what should i do? (cheap solution if possible)

Posted on Feb 15, 2012

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Check your variable valve timing oil pressure switch, it's located on the passanger side just before the intake manifold, also the solenoid may be dirty or bad. some people say to clean the screen but that requires removing the entire assembly where these two units are... Good luck

Posted on Dec 10, 2009

  • bandit2468 Jul 10, 2011

    I HAVE A 1999 ACCORD VTEC 4CY . I GOT A P1259 CODE ,AND THE MOTOR WOUND NOT REV OVER 4000RPM.TOOK VTEC SOLINOID OFF USED AJUMPER TO 12V U SHOULD HEAR CLICKING,CHECK THE PLUNGRR IS FREE,TAKETHE OTHERPART UNDER AND CLEAN THE FILTER.IFIS DIRTY NO OIL OR LOW AMOUNT OF OIL FLOWS THRUE,ANTHIS WILLCAUSE A (1259 CODE) AND WILL NOT LET REV OVER 4000RPM.OH!!DON'T FORGET TO RESET COMPUTER.LARRY.(laryjeffery1@yahoo.com)

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I have a 99 Honda accord I put it in machine it says the code is P1259Vtec System malfunction.. I have had oil changed, New spark plugs,New Fuses,Oil Filter,Oil treatment,Oil system cleaner,Oil pressure switch,Air Intake system Cleaner,replaced Sender Unit. Went to Get Smogged and It passed EVERYTHiNG Except check engine light... My car cuts out a lil when i drive for 20-30 mins Only a lil. If anyone has any Suggestions That would be great thank u

Posted on Jul 12, 2010

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  • Lamarflash1 Feb 21, 2011

    I have the same prob, and I hate that no one has input or videos on how to help.

  • brandyleigh2 Aug 02, 2011

    Most common problems in the VTEC system are associated with the solenoid valve and its filter. Remove the solenoid and pust the plunger to check for free movement, probably should use a new O-ring. Remove the oil filter adapter housing from the engine and check the filter/O-ring for clogging. A clogged filter screen could be the problem.

  • Lyndsey Rice Apr 23, 2013

    I am having the same issue. Just had the oil changed, and had a new solenoid put in. Not sure what else to do. I have a 2002 Honda CRV

  • Sam Rosario
    Sam Rosario Dec 15, 2015

    You said: the car cuts out! do you mean? It turns off while driving? if this is the case you might want to check your main PGMFI (fuel injection relay)-- under the dash / driver side. Learn more about this issue and how to resolve it. Watch the following video to learn more. https://www.youtube.com/watch?v=X5Qp-ToR...

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You could have a slipped timing belt, or the senors for the electronic timing may be dirty. If the timing belt slipped you will need to get it replaced. If the senors are dirty, take your car down to your local Grease Monkey and have the oil flushed and changed.

Posted on Nov 20, 2008

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OBD 1456 for crv

Posted on Jun 05, 2009

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I have a 2003 Honda Civic 1.7L vtec, I have replaced the solenoid valve asembly twice, changed the oil and filter with semi-synthetic. Oil pressure at lower pressure switch is @ 60-75 psi. 60 psi to the solnoid asembly. With the solenoid valve energized I only get 10 psi at vtec oil pressure switch, manual pressure gauge installed. I replaced the solenoid valve twice from dealer. Computer controls are ok it energizes solenoid at above 3000rpms, ok... Any ideas?

Posted on Oct 24, 2012

  • cesar quintero Oct 25, 2012

    For all you guys out there with code p1259 if after inspecting the oil, valves, switches and oil pressures and all is ok, there is a

  • cesar quintero Oct 25, 2012

    There is a bolt cap inside of valve cover on top of the rocker arm left upper cap, passenger side rear of head that comes lose and vtec loses oil pessure causing code p1259. The cure is to remove the valve cover and tighten the bolt which is a 14 mm head bolt if it is only lose. If missing it should be laying on top of head near the valve springs. Good luck guys. You can call me at 209-948-1452

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Try to flush engine oil and use fresh oil 5w-30 a good known brand name oil like gastric or valvoline, if it does not fix the problem, vtec selenide assembly on eBay sell for cheap price, when you have the vtec assembly then call around your local mechanic asking for labor install should be $40-$60 a slows mechanic should take less than 1/2hr to install, good luck.

Posted on May 30, 2012

  • Happymotto May 30, 2012

    Gastrol selenoid

  • Happymotto May 30, 2012

    When you did engine work, vtec selenoid connector

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James,

The VTEC solenoid does NOT lock the lower cam profile rocker arms. These rockers are always locked. The higher cam profile rockers on the other hand, are floating, until the VTEC solenoid allows oil pressure to move the pin that locks the secondary rockers to the higher profile cam lobes.

Posted on Mar 05, 2015

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I just had one of these systems in my shop, and it was being repaired for a blown cylinder head gasket. I checked out how this system works and this is what I found.

The cam shafts have two different profiles one for each cylinder, a normal mild cam and a wild profile, above 3000 rpm the solenoid valve will allow oil to change the way the rockers operate, above 3000 the rockers join together and follow the wild profile and below 3000 the rockers follow the mild cam profile.

To allow this to work properly, you must first adjust all the valves, per specifications. This will allow all the valves to close and it will allow the pin that joins the rockers to move freely. this pin is moved by oil pressure and moves slightly when pressurized to lock the rockers together for the two ranges of rpm operation.

The oil valve is controlled by the solenoid, at normal low speed operation it locks the two rockers on the intake side together and they both follow the mild cam profile, Above 3000 rpm the solenoid sends oil to the pin in the rocker assembly, and both rockers follow the wild profile cut in the cam shaft, they become secured by the pin and only one rocker is touching the cam, but being locked together they both are following the wild cam profile

If you have a dirty engine, sludge can make these pins and the whole valve train sticky, and you will experience issues.

Use synthetic oil, have your valves adjusted, check the solenoid operation, and if nothing else get a gasket set from Honda, it has a new screen installed, and clean the V-tec valve out. It would take just a few minutes to check the oil valve system out to make sure it can move freely, and it only has three bolts holding it in. The gasket set, is just two different molded O-ring type gaskets, and is very simple to inspect and clean. Use di-electric grease to hold the O-rings in place while assembling them this allows the O-rings to move while operating, expanding and contracting, don't use RTV gasket maker, it won't work, and will plug the system up. And it will impede the O-rings from working the way they were designed. They are supposed to slide around and seal the area and need a small amount of this Di-electric grease. It won't attack the rubber and is the best stuff to hold the O-rings in while working with them.

Have fun everyone James In Oregon

Posted on Nov 26, 2014

  • James Fenton III
    James Fenton III Jan 22, 2015

    Look 0 helpful answers must be a mistake, one thing I notice is most everyone has just had their oil changed, and then the light comes on, oil has to return to the sump in order to get pumped back into the V-tec system, no oil no work. Check your oil level and see if oil returns to the sump before you get scared. It seems nobody reads anything here, 0 helpful answers, back to work then.

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Hope this will answer your question,If do pls click on helful botton and you can follow me at fixya,so I can answer your question faster.thanks.
VTEC System Malfunction code P1259 - 843496-l3yrohjhb50ijjwrt10tbj0x-5-0.jpg

Posted on Mar 10, 2015

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Had one in my shop with same code,added a quart of trans fluid ands let it idle for 30 min and changed the oil,lightr is gone and is running good,guess the solenoid was a little gummed up and this cleaned it

Posted on Dec 27, 2014

  • Efstathios Govas Dec 27, 2014

    shopuld have specified that i added it to the oil haha

  • James Fenton III
    James Fenton III Dec 29, 2014

    Did you check the oil level before you added the ATF? It could just have been low oil level in the beginning, it seems like you didn't since there wouldn't be room for the ATF if it were not low to begin with. Diagnosis is more than just guessing, it's a 40 year old "Hobby" I have and you couldn't add a quart of ATF if it weren't low on oil to begin with. Did you check the fluids? Was it low on oil? Could have solved it by adding engine oil instead. It was just low on oil, next time check the fluids first. Guessing the solenoid was gummed up is poor diagnosis, checking fluid would have instantly shown the Real issue, there is no Extra room for fluid, so eithr it was low, or you over filled it. I bet you just didn't think about an oil driven system being low on oil, not working as it should. Really sad actually.

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1 Answer

Check engine light came on throwing two codes P1167 and p1259 I need help!


Oxygen sensor is not communicating with the ECM and the Vtec code is for the internal valve timing and cylinder shut down after reaching highway speeds. Dealer ship repair or a shop you know has the tools to fix the internal engine parts as well as the electronics that control the engine.

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P1259 no dtc definition


Hello friend, from here...http://www.modifiedlife.com/1999-honda-accord-diagnostic-check-engine-trouble-codes/

P1257, P1258, P1259 22 VTEC System Malfunction

I have no idea what VTEC means.

Good luck

Sep 03, 2014 | Honda Accord Cars & Trucks

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Code p1259 without CEL coming on. found out by the mechanic plugging it up the the machine.


buy it,this is the problem, P1259 VTEC MALFUNCTION CODE FOR HONDA 2 3L VTEC ENGINE ,replace it for about 150 bucks. 7775251b-bbeb-4468-b735-a02ee837616f.jpg OES Genuine Cam Adjust Solenoid for select Acura/Honda/Isuzu models, http://www.amazon.com/gp/product/B001G7ODLS
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May 21, 2014 | 1998 Honda Accord

1 Answer

How to fix VTEC System Malfunction code P1259


It is the wire close to the VTEC valve solenoid plug be cut off. Sounds wired, but it happened to my 2001 accord EX V6 sedan. After I solder it back, the TCS light turned off. But I had to disconnect the battery for 5 minutes and put it back to reset the Check Engine light.

May 21, 2012 | 1998 Honda Accord

1 Answer

My honda accord 2003 V6 hiccups when I step on the gas, and the right signals do not work. The code P1259 came up and I was wondering excatly what does that mean?


This is an error code related to VTEC related Honda engines. I am sending you a little reading on that error code.. Best of Luck..


The Check Engine Light (CEL) is on. Trouble code P1259. Tests/Procedures: 1. Locate the Variable Timing/Lift Control (VTEC) pressure switch, on the back of the cylinder block, by the oil filter.

2. The VTEC oil switch is normally closed and grounds the reference voltage from the Engine Control Module (ECM) on the Blue/Black (BLU/BLK) wire.

3. At approximately 4000 RPM, and when driving the vehicle, the VTEC system should turn on. To turn the system on, the ECM energizes the VTEC Solenoid valve and it allows oil pressure into the intake valve rocker arms, the oil pressure opens the VTEC oil pressure switch so the ECM can verify that VTEC did turn on correctly.

4. The code will set below 4000 RPM if the reference voltage is not grounded. The code will set above 4000 RPM if the VTEC oil switch does not open.

5. If the code sets at 4000 RPM or higher, the problem can be a low oil level or pressure, or a malfunction in the VTEC assembly. Potential Causes: Low Engine Oil
Plugged Oil Passage
Insufficient Oil Pressure
Plugged Oil Screen
Insufficient Oil Volume
Malfunctioning VTEC Oil Pressure Switch
Defective VTEC Solenoid
Tech Tips: When the P1259 code sets at 4,000 RPM or higher, always verify that the engine oil level is full. Also, if there is an oil pressure or volume problem, always verify that the oil pan is not pushed up and is too close to the oil pickup tube, causing an oil volume problem. Be very careful when supporting the engine with the oil pan.

Aug 26, 2011 | Honda Accord Cars & Trucks

3 Answers

Code p1259


low oil level can cause this as well as a bad oil pressure switch for VTEC control, possible VTEC solenoid.
Another reason for this code is the immobilizer. the anti theft device that looks at your key for the diode to match the car. This is on cars with out the VTEC.
On the VTEC system
DEFINITION:
VTEC System Malfunction

PROBABLE CAUSES:
-Low oil/pressure
-Blocked oil pressure
-Failed VCT oil control valve

Apr 01, 2011 | 2000 Honda Accord

1 Answer

My check engine light came on. I went to autozone and received a dtc p1259 code. What does that mean


p1259 code is manufacturer control fuel air metering,--its a VTEC malfunction, Check the oil level in your car. Everytime I've seen this code it is because the oil level is low. VTEC works off of oil pressure and when the oil level is too low there is not enough oil pressure to push the VTEC in. My guess is you're about two quarts of oil low so it should cost you about $4.00 to fix the problem. If the oil level is correct then you'll need to take it to the dealer for diagnosis.

Nov 29, 2010 | Honda Accord Cars & Trucks

3 Answers

What does honda dtcp 1259 mean


do you mean dtc code p1259 which is (P1259 Immobilizer to PCM Signal Error)

Aug 30, 2010 | Honda Accord Cars & Trucks

1 Answer

Just got a P1259 code on my 98 honda accord


I have a 1998 Honda Accord EX. I had the check engine light come on as well and I had the code read by PepBoys. The code was:P1259 or VTEC SYSTEM Malfunction.
I Don't know jack about were to start to fix this problem, so I bit the bullet and took the car to my Honda Dealer. The problem was checked out and was told this.
( REPLACE VTEC VALVE ASSEMBLY)
I had them do the work because I dont know how to do this. So after $204.00 in Labor and $162.29 in parts, for a grand total $366.29, The car was fixed!!!!!!! Run's great and no check engine light on anymore. So to help you out as best I can, here is the numbers that are on my work sheet. I dont know witch numbers represent the part number but this is how it looks on my paper.

1 15810-PAA-A02 8108797-90870 VALVE ASSY, SPOOL $150.75

1 15825-P0A-015 8161598-15999 FILTER, SPOOL VALVE $11.54

There you go! I hope this gives everyone a place to start. maybe get your self a Haynes Repair Manual (#42014 is for the 1998-2002 Honda Accord, all models) and try to do the work your self. Good luck to all of you form Donald M. in SoCal.

Oct 07, 2009 | 1998 Honda Accord

1 Answer

I have a 2005 honda civic si recently my check engine light came on showing the following codes they are P1259 and P1166


P1259 is a code for vtec malfunction usually cause by a bad vtec solenoid, vtec pressure sensor, low oil level, bad connection. Was oil change done? May want to check the oil level. P1166 is a code for a primary o2 sensor 1.

Sep 25, 2009 | 1998 Honda Accord

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