Failed Emissions Test Lambda
#1
Registered!!
Thread Starter
Join Date: Jun 2019
Age: 29
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Failed Emissions Test Lambda
Hi guys ive recently bought a honda civic 1.6 engine is a d16v1, it went in for a MOT and flew through most of the test .... then the emissions test came the tester tried 3 or 4 times to get it to pass but to no avail on the paperwork it said "exhaust lambda reading after 2nd fast idle ouside specified limits" he told me i need to change the lambda sensor and this car has 2 he got a price of £40 +vat per sensor so if both are needing replaced thats £80 +vat without cost for labour im a bit uncomfortable on paying possibly £100+ to get it fixed as im pretty sure i can fix this myself and ive found sensors on ebay ranging from 20 to 65 pounds i was gonna go for the £30 mark and do the labour myself but the tester said "its not something you can do on your back" which i find hard to belive the guy was quite nice nd helpful but from what ive seen its a pretty easy job hardest part removing the old sensor but im thinking its not as hard as hes trying to make me belive and at the end of the day its a business there to make money i just dont fancy being ripped of when it could be cheaper if i fix it myself as i think im pretty capable i did do everything else on the car including droplinks, backbox, camshaft sensor and many other things on this car and another car i own ive repaired engine mounts changed calipers discs pads basicly i like to fix my own things with being an engineer and i save alot of money i go to a garage and im paying 2x as much maybe more
Anyways what id like to know is, Can i do it myself? , Could it be anything other than a faulty sensor that will cause high lambda reading?
EDIT: Forgot to add the values from the test they are as follows
Natural Idle Test :
CO 0.003 (max limit 0.500) PASS
Fast Idle Test:
CO 0.261 (max 0.300) PASS
HC 37 (max 200) PASS
Lambda 1.657 (min 0.970 / max 1.030) FAIL
2nd Fast Idle Test:
CO 0.003 (max 0.300) PASS
HC 8 (max 200) PASS
Lambda 1.103 (min 0.970 / max 1.030) FAIL
Result: FAIL
Anyways what id like to know is, Can i do it myself? , Could it be anything other than a faulty sensor that will cause high lambda reading?
EDIT: Forgot to add the values from the test they are as follows
Natural Idle Test :
CO 0.003 (max limit 0.500) PASS
Fast Idle Test:
CO 0.261 (max 0.300) PASS
HC 37 (max 200) PASS
Lambda 1.657 (min 0.970 / max 1.030) FAIL
2nd Fast Idle Test:
CO 0.003 (max 0.300) PASS
HC 8 (max 200) PASS
Lambda 1.103 (min 0.970 / max 1.030) FAIL
Result: FAIL
Last edited by Honda DIY; 06-30-2019 at 09:49 AM.
#2
Registered!!
Re: Failed Emissions Test Lambda
With a proper infrared surface temperature reader, once the car is warmed up you should see a increase in temperature on the exit side of the converter. If it’s the same or colder, consider replacing that first before buying new sensors.
You will need the appropriate spanner and socket for the sensor and some penetrating oil, but yes you can take them out.
#3
Registered!!
Thread Starter
Join Date: Jun 2019
Age: 29
Posts: 2
Likes: 0
Received 0 Likes
on
0 Posts
Rep Power: 0 Re: Failed Emissions Test Lambda
Thanks for the reply, i did think about the cat unfortunatly i dont have a temp reader but ill keep that in mind.
I didnt think it was a hard job , well not as hard as the tester was making it out to be anyways, ive heard many people replace them and never heard anyone say it was very hard do DIY
I didnt think it was a hard job , well not as hard as the tester was making it out to be anyways, ive heard many people replace them and never heard anyone say it was very hard do DIY
#4
"Marge, anyone could miss Canada! All tucked away down there."
Join Date: Feb 2016
Location: Barrie, ON Canada
Posts: 8,999
Received 1,126 Likes
on
941 Posts
Rep Power: 190 Re: Failed Emissions Test Lambda
Spray penetrating fluid several times of the next few days to make it easier to remove the o2 sensors if you decide to change them. Also only use the original brand that came in the car, either Denso or ntk
Thread
Thread Starter
Honda Civic Forum
Replies
Last Post
oceanbreeze
Mechanical Problems/Vehicle Issues and Fix-it Forum
12
08-10-2016 12:26 PM
javiertololo
Mechanical Problems/Vehicle Issues and Fix-it Forum
20
05-03-2012 11:48 PM
fernando97honda
Mechanical Problems/Vehicle Issues and Fix-it Forum
5
04-25-2011 10:30 AM