2014 Honda Civic - with error code P1129

Hello Bosses of scope,
i really need urgent help, I am new into scope and can’t really understand how this scope thing work, I have a problem with this Honda 2014 civic , 1.8 litre engine, this car has what I called the dreaded P1129 ( map sensor) , owner had the map changed but still problem persist,

car came and I check the 5 volts and the ground current, all are present, the signal line is also good, 

but I don’t know how to use the scope to point where exactly the issue or leakage is, I have checked the timing and the chain and the adjuster everything is fine… attach is picture of the timing 

i need help from
someone who has some spare time to remotely access my laptop via team viewer and watch the live information on the scope and advise me what exactly is causing the map error code to keep coming on.

please I live on GMT+0 time zone, so please kindly tell me the exact time I should meet you online here.

i have also attached freeze frame data for the error code..


thanks 

Can you post code meaning because I’m looking online and it’s a throttle body issue not a map sensor issue.

Never mind I typed in wrong code. Screenshot code setting criteria. 

P1129 Map Sensor higher than expected

pleazw cherly, do you mind to help me via team viewer?

Looks like it set on decel at fairly low RPM. How do your MAF,, MAP, and fuel trims look at idle?

wrote:

Looks like it set on decel at fairly low RPM. How do your MAF,, MAP, and fuel trims look at idle?


here is the live data recorded for Maf & map at idle, idle start from 0-1min, and throttle Opel start from 1:00-2:00


www.mediafire.com/file/o9lm1j7qe32t2w1/IMG_3088.MOV/file




click on the link to download the video. Thanks 

 

If I refresh page, the time goes up, lol.

wrote:

If I refresh page, the time goes up, lol.

thanks for notifying me, I have corrected the problem, please try the download Again


 

The "Idle Target" is 720 RPM, but does that match the idle RPM?

Does your idle vacuum change if you complete the Idle Relearn? My thinking behind that is maybe the map voltage is too high after decel because the throttle plate won't close enough to make enough vacuum.

The MAF is reporting around 3 gram per second on this 1.8L engine and fuel trims are almost perfect so I'm assuming this air weight is correct at idle.

Your idle vacuum is around 17 inHg, which I think is borderline okay. Borderline. Is it okay for the PCM? I don't know but I think it could be a little better. Could this be because the Idle Learn is not complete?

At wide open throttle, does your MAP sensor (kPa) equal your BARO reading (I saw 100kPa for BARO in the freeze frame)?

How high does Calculated Load get when you go wide open throttle in park?

I believe Honda calls the Calculated Load PID "CLV" according this this site:
alexey-bass.github.io/honda-hds-help/Civic-2013/PGM-FI.html

Are there any drivability issues?

wrote:

The "Idle Target" is 720 RPM, but does that match the idle RPM?

Does your idle vacuum change if you complete the Idle Relearn? My thinking behind that is maybe the map voltage is too high after decel because the throttle plate won't close enough to make enough vacuum.

The MAF is reporting around 3 gram per second on this 1.8L engine and fuel trims are almost perfect so I'm assuming this air weight is correct at idle.

Your idle vacuum is around 17 inHg, which I think is borderline okay. Borderline. Is it okay for the PCM? I don't know but I think it could be a little better. Could this be because the Idle Learn is not complete?

At wide open throttle, does your MAP sensor (kPa) equal your BARO reading (I saw 100kPa for BARO in the freeze frame)?

How high does Calculated Load get when you go wide open throttle in park?

I believe Honda calls the Calculated Load PID "CLV" according this this site:
alexey-bass.github.io/honda-hds-help/Civic-2013/PGM-FI.html

Are there any drivability issues?

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thank you very much for taking your time to study my complain on this car am trying to sort out.  you asked if there is any drivability issue (yes there is) car wont pull well.. i have some latest two videos made and will like to share this as well, to really give more clue if i am have intake leak or timing issue...  the attached file contains the link to the fold with the new video links in..

thanks
 

I've uploaded your last video here: streamable.com/pjatth
THat's a good site for quick video as it requires no sign up, just drag and drop if on desktop

~ 700 rpm
~ 20 inHg intake MAP
Much better idling intake vacuum

Ignition timing advance should go positive as the RPMs go up

Can you record the data and playback later? I don't want you recording while driving lol. Record only these PIDS and go wide open throttle.

MAF g/s
Intake Manifold Absolute Pressure
AF LAMBDA (a/f sensor equivalence ratio)
IAT
CLV - calculated load
ENGINE SPEED
FSS - fuel system status
Fuel trims
TPS percent

Things I'm looking for :
CLV getting to ~ 90
Map sensor inHg = BARO
Af lambda less than or equal to 1, meaning fuel delivery is good
Closed loop at WOT; OL at decel

@Cheryl
I don't have code setting criteria. All I have is from a 2011 Honda

i.imgur.com/9fJ0oEt.png

Also take note if intake manifold vacuum returns to normal after a snap throttle.

streamable.com/b0k6dv ( Honda Scan app on launch tool)

streamable.com/e9wr8z ( obd )


streamable.com/z5hx0x ( obd )
 

Stupid rev limiter is in play in park. Take it on the road. This volumetric efficiency test is only good at Wide open throttle

Just need 1 second of WOT, no need to hold it at red line and no need to record in real time while you're doing it.

by record i mean holding your phone up. can't this scanner play back the data?

Finally, by the grace of God, I woke up this morning and I could hear a little voice within me that, I should perform special function, so I went Into the launch scan tool, picked Honda app and then to ecm and then to special function, then I selected throttle learning, Infact suddenly after doing the relearn, every thing start working, the map start reading the recommended values. No more issue again, car drives fines.

I thank God and all who contributed to this thread too, God richly bless you all..