p2000-00 Trouble Code, (NOx) Nitrous Oxides Number 1 Trap Efficiency....Engine Oil Level Rising !!

Summary

In this detailed automotive repair vlog, the mechanic addresses the issue of engine oil level rising in two different cars. After fixing the first car by replacing the DPF and sensors, the second car with a similar problem is diagnosed with fluctuating exhaust gas temperature sensors and a P2000 code indicating a faulty NOx sensor. The mechanic replaces both NOx sensors, resets them, and verifies the repair by checking the oil level, which remains stable after a test drive. The video concludes with a discussion on the importance of these sensors in engine management and a teaser for the next repair task involving a noisy timing chain.

Takeaways

• 🔧 The mechanic fixed an engine oil level rising issue by replacing the DPF and its sensors in a 65 plate car, but the problem reoccurred in a 16 plate car.
• 📏 The mechanic checked the oil level and found it to be significantly over the maximum, prompting an oil filter change and a test drive to monitor the situation.
• 🛠️ After clearing ECU codes and a 20-mile test drive, the mechanic observed fluctuating readings from the exhaust gas temperature sensors and HEGO sensors, suggesting potential issues.
• 🌡️ The exhaust gas temperature sensors showed different readings, with sensor one at 400-500 degrees Celsius and sensor two at over 600 degrees Celsius, indicating they might be functioning correctly.
• 🔑 A P2000 code for 'NOx sensor below threshold' was identified after the test drive, which the mechanic associated with a faulty NOx sensor.
• 🔄 The mechanic replaced both NOx sensors and reset them using the scanner's special functions to address the P2000 code.
• 🛑 The 'Engine Oil Deteriorated' code was persistent until an oil change was performed, after which the code was cleared.
• 🔍 A second test drive was conducted to verify if the replacement of the NOx sensors and the reset procedure resolved the issue.
• 📈 The mechanic monitored live data during the test drive to ensure all systems were functioning correctly and no error codes reappeared.
• 🚗 After a two-week period and several thousand miles, the oil level in the car was found to be within the normal range, indicating the issue was resolved.
• 🛠️ The mechanic also addressed a separate issue with a car that had a noisy timing chain, which required replacement to avoid potential damage during a static DPF regeneration.

Q & A

What was the initial problem with the 65 plate car that was resolved?

The initial problem with the 65 plate car was a rising engine oil level. It was resolved by changing the DPF (Diesel Particulate Filter) complete with all the sensors, which was a secondhand unit.

What issue was encountered with the 16 plate car similar to the 65 plate car?

The 16 plate car had a similar issue of the engine oil level rising, which was found to be over the maximum limit when checked two weeks after a previous check.

What steps were taken to diagnose the problem with the 16 plate car?

The technician cleared all the codes from the ECU, took the car for a 20-mile run while monitoring live data on a scanner, specifically looking at the exhaust gas temperature sensors and the two NOx sensors in the DPF.

What did the live data from the exhaust gas temperature sensors indicate?

The live data showed that the first exhaust gas temperature sensor near the engine was reading between 400 and 500 degrees Celsius, while the second sensor in the middle of the DPF was reading around 630 degrees Celsius, indicating that the temperature sensors were working fine.

What code was triggered during the 20-mile test drive and what does it refer to?

A P2000 code was triggered during the test drive, which refers to a NOx (nitrous oxide) sensor efficiency below threshold, suggesting a problem with the NOx sensor.

What action was taken after identifying the P2000 code?

The technician decided to replace both the NOx sensors, number one and number two, as they were suspected to be causing the issue.

How were the new NOx sensors reset after installation?

The new NOx sensors were reset using the special functions of the scanner, which involved turning the ignition on and off during the reset procedure as guided by the scanner.

What was the outcome after replacing the NOx sensors and performing a 20-mile test drive?

After replacing the sensors and performing the test drive, no codes came back, indicating that the issue was likely resolved. The car was then given back to the driver for further use.

How was the final check on the oil level performed and what was the result?

The final check on the oil level was performed by wiping the dipstick and checking it in a well-lit area. The oil level was found to be exactly at the maximum mark, indicating that the issue was cured.

What additional problem was discovered with another car and how was it related to the DPF?

An additional problem with another car was discovered where the DPF was full of soot and needed regeneration. A split in the turbo hose had caused a loss of boost pressure, leading to the DPF becoming clogged.

What was the final task mentioned in the script and why was it necessary?

The final task mentioned was replacing the camshafts and timing chain of a car that had lost power due to a clogged DPF and a noisy timing chain. It was necessary to prevent potential damage during a static regeneration with a faulty timing chain.

Outlines

00:00

🔧 Engine Oil Level Issue and DPF Sensor Replacement

The video script describes a recurring issue with two different cars where the engine oil level was found to be rising. The narrator initially addresses a fixed case involving a secondhand DPF unit with sensors, which resolved the issue. In the current case, despite checking and setting the oil level correctly, the problem persists with a 16 plate car. The mechanic clears ECU codes, conducts a 20-mile test run, and uses a scanner to monitor exhaust gas temperature sensors and DPF sensors. The test reveals fluctuating sensor readings, but the mechanic decides not to replace the temperature sensors. A P2000 code related to NOx sensor efficiency prompts the replacement of two NOx sensors. The mechanic also demonstrates how to reset the sensors using a scanner and plans a follow-up test drive to ensure the issue is resolved.

05:02

🛠 Resolving the NOx Sensor Issue and Confirming Oil Level Normalcy

After addressing the NOx sensor issue with a 20-mile drive and resetting the sensors, the mechanic finds that the oil level in the car is now normal, with no codes indicating oil deterioration. The mechanic had previously cleared several low fuel pressure codes due to a fuel filter replacement. The 'engine oil deteriorated' code was resolved by performing an oil change required reset. A subsequent test drive confirms that the NOx sensor code does not reappear, and the mechanic plans to return the car to the driver for further use. The mechanic also checks the oil level after the driver returns for unrelated car services and confirms that the oil level remains correct, indicating the issue has been resolved.

10:03

🔄 The Significance of P2000 Code in Diesel Engine Issues

The narrator discusses the significance of the P2000 code in diagnosing engine issues, particularly related to rising engine oil levels. The mechanic had previously disregarded this code, but in this case, it led directly to the faulty NOx sensor, which was causing the problem. The mechanic explains that these sensors are crucial for the ECU to adjust the engine's fuel injection in real-time. The faulty sensor could cause unintended DPF regeneration, leading to fuel entering the sump and mixing with engine oil. The mechanic shares a personal anecdote about a car that came in for a lack of power due to a full DPF and a noisy timing chain, indicating the need for a more comprehensive repair.

15:05

👨‍🔧 Addressing Timing Chain and Tensioner Issues

The mechanic concludes the script by discussing a separate issue with a car that has a noisy timing chain, which was discovered while addressing a power loss due to a full DPF. The car had a damaged turbo hose that caused a loss of boost pressure. Upon inspection, the mechanic finds that the timing chain tensioner is faulty, with broken pieces falling into the sump. The mechanic decides to replace the tensioner and chain, acknowledging that the broken pieces will not be a problem as they are filtered out by the oil pump. The script ends with the mechanic preparing to perform these repairs, reflecting on the day's work.

Keywords

💡Engine Oil Level

The engine oil level refers to the amount of lubricating oil in an engine. It is crucial for the proper functioning of the engine as it helps reduce friction and wear between moving parts. In the video, the rising engine oil level was a recurring issue in two different cars, indicating a potential problem that needed to be diagnosed and resolved.

💡DPF (Diesel Particulate Filter)

A Diesel Particulate Filter is a device that removes diesel particulate matter or soot from the exhaust gas of a diesel engine. In the script, the DPF is mentioned in the context of a secondhand unit that was replaced to fix an engine issue, and later in relation to a car that needed a static regeneration due to a full DPF from soot accumulation.

💡ECU (Engine Control Unit)

The Engine Control Unit is the electronic brain of a vehicle that controls various aspects of the engine's operation. In the video, the ECU is mentioned in the context of diagnosing issues by clearing codes and observing live data, such as exhaust gas temperature sensors and NOx sensor readings.

💡NOx Sensor

NOx sensors, also known as nitrous oxide sensors, are devices that measure the levels of nitrogen oxides in the exhaust gases of vehicles. They are important for monitoring and controlling emissions. The video discusses the replacement of these sensors due to a 'P2000 code' indicating a problem with the sensor's readings.

💡P2000 Code

The P2000 code is a diagnostic trouble code that indicates a problem with the NOx sensor's efficiency being below threshold. In the video, this code was crucial in diagnosing the issue with the engine oil level rising, as it pointed to a faulty NOx sensor that needed replacement.

💡Exhaust Gas Temperature Sensors

Exhaust gas temperature sensors measure the temperature of the exhaust gases leaving the engine. They are important for monitoring the engine's performance and efficiency. In the video, these sensors were observed during a test drive to ensure they were functioning correctly in relation to the DPF and NOx sensor issues.

💡Fuel Pressure

Fuel pressure refers to the force exerted by the fuel system to deliver fuel to the engine. In the video, low fuel pressure codes were found in the ECU, which were addressed by replacing the fuel filter, indicating a potential cause for the engine's performance issues.

💡Oil Change

An oil change is a routine maintenance procedure where the old engine oil is drained and replaced with new oil. In the video, an oil change was performed to address the rising engine oil level and to reset the 'engine oil deteriorated' code in the ECU.

💡HEGO Sensor

HEGO stands for Heated Exhaust Gas Oxygen sensor, which is a type of sensor used to measure the oxygen content in the exhaust gases of a vehicle. In the video, these sensors were replaced along with the DPF in a previous car, and were suspected to be the cause of the engine oil level issue in the second car.

💡Static Regeneration

Static regeneration is a process used to clean the DPF without the vehicle being driven. It is necessary when the DPF is full of soot and needs to be cleaned without the engine running. In the video, a car required a static regeneration due to a full DPF and a faulty turbo hose causing loss of boost pressure.

💡Timing Chain

The timing chain is a part of the engine that synchronizes the rotation of the crankshaft and the camshaft(s), ensuring the correct timing of the engine's valves. In the video, the timing chain was found to be noisy and in need of replacement, as it was flapping around due to a worn tensioner and missing guides.

Highlights

Engine oil level rising issue resolved by changing the DPF and all sensors on a secondhand unit.

A 16 plate car exhibiting the same engine oil level rising issue as a previous 65 plate car.

Engine oil level found to be significantly over the maximum after a two-week check.

Clearing of ECU codes and a 20-mile test run to diagnose the issue.

Observation of fluctuating exhaust gas temperature sensors and HEGO sensors during the test run.

P2000 code indicating a problem with the NOx sensor, leading to its replacement.

Special functions used to reset the newly replaced NOx sensors.

Engine oil deteriorated code cleared by performing an oil change required reset.

Second test run after sensor replacement to ensure no codes return.

Successful resolution of the engine oil level rising issue confirmed after a 20-mile run.

The importance of NOx sensors in adjusting engine performance in real time.

DPF regeneration issues potentially causing fuel to enter the sump and mix with engine oil.

The significance of the P2000 code in diagnosing engine oil level rising problems.

A second car with a similar issue resolved without a P2000 code, suggesting different causes.

The discovery of a noisy timing chain and the decision to replace it to avoid further complications.

Removal of broken timing chain tensioner components to prevent damage to the oil pump.

The video concludes with the successful resolution of two different engine oil level rising problems.

Transcripts

hello everybody

guess what remember this video

that one there about the engine all

rising and we fixed it by changing the

DPF complete with all the sensors it was

a secondhand unit and it cured it

totally

Bingo well here's the problem

we now have that was a 65 plate car this

is now a 16 plate that's doing the same

thing the engine oil level was Rising

now I checked it two weeks ago and it

was miles over the maximum I told the

driver to go well I gave him an auto

filter change set the oil on the level

time to go away do a few thousand miles

and come back and I'll check it again

just to make sure he came back yesterday

real well the other day November the

16th when it was

and his old level was about a good inch

and a half over the maximum so at that

point I knew that we still had a problem

with this car so it's it's not just one

car we've had here now it's two so I've

looked into this one I took this card

down the road I cleared all there were

there were quite a few codes like low

fuel pressure codes in the ECU I cleared

all the codes

I then took it for a good 20 mile run

and I had live data on my scanner solar

site Snap-on Souls Ultra

I was looking at the live data while I

was driving it

specifically I was looking at the

exhaust gas temperature sensors

also the two Hugo sensors that fit in

this DPF I was watching them as well and

they were fluctuating so I don't know

what the limits of them are supposed to

be I've got no information

but as far as the two exhaust gas

temperature sensors go

number one which is the one nearest the

engine was reading approximately between

four and 500 degrees Celsius

whereas number two which sits right in

the middle with the top of the DPF that

was reading a good 600 plus about 630 it

got up to I think to me that says the

temperature sensors are working fine

they're the the second one should be the

hottest one especially when it's doing a

region so anyway I'm kind of thinking I

bet I'm not going to change the

temperature senses but when I got back

here

I then looked at the codes in the ECU

and there was a code that got flung up

in that 20 mile run

it was

I'm gonna get it ill I'm going to show

you what it is I'm going to read it to

you

because this is quite interesting

nitrous oxide

nox number one number one I would guess

is the top ego sensor on top of the DPF

because there's two of them there's one

at the back after this after the filter

and one one before the filter

trap efficiency below threshold this is

P2000 and I think I some people have

actually mentioned me messaged me about

P2000 codes

now a nitrous oxide center to me would

have a little ECU bolted to it on

especially locking BMWs and stuff so I

weren't sure about this because I've not

had much to do with the knock sensors in

these nox sensors should I say

they are called nitrous oxide sensors

but anyway so I decided

to replace number one nitrous oxide

sensor I also got number two as well

because funnily enough for some reason I

had I had the number two nitrous oxide

sensor here in our parts department so

if I if I replace both the both of these

nox sensors and I'm going to give it a

try but let me just show you the scanner

because when you go into special

functions you have to reset them have a

look

so actually before I

go into the car

there's our number one nox sensor which

when Ford sell these they call them Hugo

sensors

so that's the number one which that is

the part number for it

and the number two which is after the

DPF filter it's got a different colored

sleeve and it's got a gray sleeve in

with the top one it's got a blue sleeve

in number two

that is the part number for it

anyway

so there you are there's our number one

sensor which are fitted the number two

is down the back so I can't show you

that but you kind of get the feeling

when I come in here

I have the scanner

loaded up

special functions ignition on

if I press yes under special functions

and I work my way down

the list

here we go

it's her it says reset the front nitrous

oxide nox send to learn values which is

that one there

and it also says reset the rear nitrous

oxide nox sensor learn values

so I've just fitted new sensors so let's

do this

and the Very the very fact it hit after

a 20 mile drive this vehicle had flung

up

and number one nox sensor basically

outside its limits below threshold

that says to me there's something wrong

with that nox sensor

so carry out this procedure if a new

front

new front nitrous oxide sensor has been

installed continue

switch signals into the on which it's on

now it's doing its reset

switch ignition off

ignition off continue

please wait

procedure complete

so now I'm going to reset the rear one

ignition on

continue

it does its little count well it does

about four seconds that's about it

ignition off

continue

procedure complete

there we go

and there's nothing else to reset so now

I can come out of this

there is

one thing I failed to mention at the

beginning of this video

before I even done anything to this car

apart from replace the fuel filter

I connected the scanner up and there

were a number of codes in the ECU most

of them were low fuel pressure which was

due to replacing the fuel filter

but there was one code which I've seen

quite a lot it's a common one it was

engine oil deteriorated

normally engine oil deteriorated goes

hand in hand with oil change required

which Bings up on your instrument pack

to let you know it is a service to you

so

I try to clear that engine all

deteriorated and it would clear but the

moment I start the engine up again the

code would be straight back and the only

way I could get rid of engine or

deteriorated out of the ECU was to do an

oil change required reset using the

buttons on your steering wheel

after I I've like reset the service

light basically once I've done that

engine or deteriorated cleared out the

ECU and did not come back

so I had a clean ECU no codes whatsoever

I then took it for a run down the road

20 miles came back and it had that nox

nitrogen nitrogen oxide sensor code low

threshold which was like that's good

news actually because that pointed me to

that number one higgo sensor on the DPF

so now I fitted two they're both of them

sensors I've done a reset of a scanner

what I'll do now I'm going to give it

another 20 mile run and check all the

live data see everything's working okay

if everything's fine and no codes come

back I'll then give the car back to the

driver for a good two weeks I should

think let him do a few thousand miles

and then I'll check the oil level and at

that point I will know if it's cured or

not

I will be in I will be in touch it's the

waiting game you see so uh

see you on the other side

okay everyone

this particular car here y m y

which is

the car I have on my piece of paper I

made a note of

I change the oil filter gave it a run he

came back it was over full again with

oil

we've replaced

the uh

whatever you want to call them here you

go sensors nitrous oxygen sensors he's

done well over a thousand miles now

since uh I last replaced the oil and

replace them sensors

so now he's come back for our headlight

out and basically a pair of wiper blades

but I thought this is a good opportunity

to check the oil

so

I'll give it a little bit of a wipe the

car's been sat for like a couple minutes

now while I've been changing the

headlight bulb

you know that's that's all it takes to

change a headlight bulb about two

minutes now

probably because every half the clips

are missing that hold the bumper on but

anyway

it's a little bit dark at the moment so

so let's see

put that in pull it out try and get

around to the light

is my phone going to focus look at that

let me take this

into more of a light and lit up area

look at that

that is absolutely bang on where it

should be you see that you see the

little line on the dipstick

but there there's the maximum Mark and

that hasn't risen I've just brought it

over here so we can get a better look

like but every time I put the dipstick

down it kind of rolls into the position

where I can't see it but you can see the

line the maximum line on the dipstick

to show where the oil level is and that

is bang on the maximum where it should

be so that's excellent so that's another

car fixed

so did you also notice the color of the

oil on that dipstick it was pretty clean

that's because I recently replaced it

the thing is when you get diesel oil

mixing with your engine oil

apart from the obvious that it's rising

it gets black very quickly

I guess I was lucky in this case but a

simple fact I had that P2000 code flag

up in the engine ECU

in the previous car which I've linked to

earlier on in this video

there was no P2000 code

so uh it was a little bit more tricky as

to what the hell to go for

but in this case that P2000 code

well it led me straight to the actual

component that was faulted it was

causing a problem all along

I will say however

throughout all the years I have been

messing around with these mondeos I have

seen that code P2000 nitrous oxide

sensor below threshold whatever it is

many many times but it's been one of

those codes that would be in conjunction

with many other codes you'd normally

clear all the codes run the car again

and see what comes back which would

normally be a low fuel pressure code

because it would probably be an injector

problem on one of these cars if anything

and the P2000 code you wouldn't bloody

see again so I've always disregarded it

as nothing I've never had that code or

related that code to anything that's

been causing a problem until now

now I know if I see P2000 again

it could well be I will be very

suspicious about the oil level rising

because let's face it

them nitrous oxide sensors or Hugo

sensors as forward call them they adjust

or tell the ECU how the engine's running

ritual lean constantly in real time

so that then the ECU obviously adjusts

the injectors to fire at the right time

and all the rest of it so they're quite

important and if they're not working

properly as they should do this is the

kind of consequences you get

DPF regening when it shouldn't be things

like that

I I believe it's the DPF

the engine is firing on its exhaust

stroke or trying to regen or whatever at

the same time and fuel is going down the

side of the cylinders into the sump

it's a little bit complicated I mean I

can't even get my head around it myself

it's a bit beyond me but you know it is

what it is

I'm glad I fixed it that's that's the

second oil level rising problem we've

now fixed which have been two two

different problems but I can't actually

say the first problem was a definite I

mean the first car could well have been

the same sensors I'll never know because

I replaced the whole DPF with all four

sensors on it two temperature probes and

two hego sensors but anyway I'm glad

it's done it's all over

that's it end the video

one other thing

guess what I'm doing now

prizes for guessing

can you see what's missing out the top

of this cylinder head the flipping

camshafts and timing chain

this particular car it came in because

it lost power

and it's it's literally enforced limited

power at the moment because the DPF the

diesel particular filter is full of soot

and it needs to be regenerated a static

region needs to be done in it there is a

turbo hose down here

that had a split in it and that's the

cause of it all this it's lost its boost

pressure

and obviously it has suited up the DPF

and the drive has been driving the car

around until the DPF got to a point

where it's got so much soot in it that

has put it into Force limited power so

the drivers come in and said I've got

lack of power well obviously I've

actually put another second hand boost

hose on I'd run it up again and then

I've noticed that the chain the timing

chain was noisy

so I took the filler cap off and uh got

my little pick in there and then yep the

chain is flapping around so great

there's no way on this Earth that I'm

going to do a static regeneration with a

bloody slapping timing chain because God

only knows what could happen

there's no real dramas with this car

I have the new tensioner I have the new

chain on ready to go back on

the only thing that isn't too clever

about this is the actual tensioner

obviously this is the top guide goes

here which is completely gone

and the bottom piece

there's a little piston in there and a

spring that won't come out it's stuck in

there so the spring is obviously all

broken up to Pieces the little piston in

there stuck but there should also be a

guide at the bottom here a metal piece

and a plastic bit that's completely gone

now normally under the normal run of

things

you would normally fish out any broken

pieces just in here but there's nothing

it's all completely gone so it's all

falling down the oil return hole into

the sump

it's a good thing the oil pump pickups

have a nice fine gauze on them so all

that don't get picked up so the

only way I'm really going to get them

bits out is to take the sump off but hey

harry it's not too much of a problem to

do that

so anyway that's uh

that's what I'm doing to finish the day

off with so what can I say Happy Days

or should I say Another Day in Paradise

not anyway that's the video over thanks

for watching everybody I guess I'll see

you all in the next one

see ya