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Espace 2.0T throttle body error DF0328 **Sorted**

15K views 56 replies 4 participants last post by  biotic 
#1 ·
Hey everyone,

Renault Espace 4 2.0T petrol

Didn't drive the car for a month while we were away.
Upon return it immediately threw the dreaded Injection Error and went into limp mode.

The actual error is DF0328 - throttle potentiometer coherence track 1 and 2

It runs fine until it the water temp is up to normal,
then it throws the error and goes into limp mode - the RPM's fluctuate between 2k-2.5k

Below are images with the throttle readings.

The first 2 images are when it idles normally.
The last 2 are after it goes into limp mode - throttle track 2 goes up to around 80 and gets stuck there.

I cleaned the connectors, the throttle body valve and throttle sensor inner circuits, no changes.
Any ideas?

I'm asking because I've read about cases where changing the throttle body didn't solve the issue.

Thanks,

George
 

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#2 ·
Take the plug off the accelerator pedal, have a look there ,,,
Some contact cleaner wont go amiss, IF, desperate, a spray of wd40, but after a while this builds up a film and you will then have to try and get it off with contact cleaner..
Have a look at your throttle body, see if it is cleanish, ....
If dirty,, dont take it off the car, spray with wd40, allow to soak through, start the car, and let it idle.
It will accelerate up for a few seconds, dont panic, thats normal, as it mixes with the diesel......
 
#3 ·
Cleaned the pedal plug - no difference.

Anyone know what the normal throttle tracks 1 and 2 values should be relative to each other?

I see that the pedal tracks 1 and 2 values are different but the throttle tracks 1 and 2 are the same right until the error comes up.
 
#4 ·
Have you checked the throttle body first, an obd is only a pointer, of your issue...
Before you start tracing wires do the easy stuff first.
The potentiometer is on the side, its not moving freely..
What year is your car,,,,, will see if I can find the resistance measure is for you.
 
#5 ·
Car is 2003, 2.0T petrol. Throttle body part number is 82002 06754

I cleaned the throttle body, opened the throttle sensor and cleaned the circuits.

Can you clarify what you mean about the potentiometer being on the side and not moving freely.
 
#6 ·
I cleaned the connectors, the throttle body valve and throttle sensor inner circuits, no changes.
Any ideas?

Have you stripped it down inside, or just the connectors....that the multi plug pushes into
 
#7 ·
Cleaned the throttle body valve. Took the cover off the throttle sensor and cleaned the circuits and contacts. Didn't pull the whole thing out.
It rotates freely by hand.

Regarding the errors ... When the 'injection error' appears on the dashboard, there are 3 errors on the obd scanner:
1. Df0328 - Throttle potentiometer circuit, coherence between track 1 and 2
2. Df0328 - Throttle potentiometer circuit, coherence between track 1 and 2
3. Df0399 - Immobilizer code not set

When the 'injection error' does not appear on the dashboard, there are 2 errors on the obd scanner:
1. Df0328 - Throttle potentiometer circuit, coherence between track 1 and 2
2. Df0399 - Immobilizer code not set

When I clear the errors with the scanner, the 'injection error' disappears on the dashboard,
but it comes back within a second.

If I unplug the throttle body cable completely I get another error - 'Throttle potentiometer circuit track 1 - open or short circuit'.
This clears on its own when I reconnect the cable.

Could that 'Immobilizer code not set' error be related?

When I lock the car, the scanner says the immobilizer is set.
 
#8 ·
Immo code wont be set if car is open, so that can be ignored,,
Does your scanner give anything after these codes DEF 1, OR 2.
Can not see the pictures on this laptop partition, long story,,,
But if I put another partition on, then wont be able to check any info
 
#12 ·
Injection computer connector B, track G4 Throttle potentiometer, track A1
Injection computer connector B, track G3 Throttle potentiometer, track A2
Injection computer connector B, track G2 Throttle potentiometer, track A5
Injection computer connector B, track D3 Throttle potentiometer, track D3

This is the layout of each pin, associated with that fault
These need testing with an ohms meter
 
#14 ·
:wink2::wink2::wink2::wink2:
Its just ,,, take the battery off, find the multi plug on your injection ecu, the letters are inside the multi plug, then the plug off your throttle body, find the numbers, ohms meter between the two pins, see if any resistance...
Should read 0, or there about.
Loads of videos on tinternet,,, think the guy is called fred.
But some one will clarify...
 
#16 ·
Now you are getting it, so something is going awry ,,, thats why the obd only leads you to a fault.
When does your fault occur,, when hot,, so though the ECU has recognised a fault, it can only work out, whats gone outside parameters at that point..
See if you can measure the coolant temperature sensor, ignore your fault.
Get a reading off this.
Next time it shows the fault,, DONT switch your engine off, connect your interface, then do a diagnostic scan ,, some faults vanish, when ignition is switched off,,,
Try not to believe your scanner too much, but think outside the box..
What happens, what info is being shown,,,,
 
#17 ·
I kept the scanner on from cold start to the point where it threw the error.
The only thing I can see is that track 2 of throttle potentiometer jumped to around 80 and the throttle body is stuck open.

Everything else seems to be normal. Temp sensor also.

Cables have more resistance when warm, right?
 
#18 ·
No disconnect your scanner, let the fault appear , then connect up..
See if that shows it...
Another thing, when you clear the fault, are you then switching the engine off,,.
disconnecting the scanner,, and leaving the ignition off.
Then its, start the car, and let idle, until up to temperature ...
 
#19 ·
When the car is warm and the error comes up it is impossible to clear it - it comes back instantly.
I can see the coil icon disappear and reappear.

The only time I can clear the fault without it coming back is when the car is cold - I'm basically clearing the fault
that was registered when the car was warm.
 
#20 ·
Ok ,, now you know what tracks to check... THE part of your throttle body, the pins that your multi plug connects to
When the car is cold, or the point it allows you to clear the fault, measure these with an ohms meter.
Then when it gets hot and the fault appears, measure again, see if there is a noticeable difference ....
 
#21 ·
If I understand correctly you're saying to check each of these 4 pairs.

Injection computer connector B, track G4 Throttle potentiometer, track A1
Injection computer connector B, track G3 Throttle potentiometer, track A2
Injection computer connector B, track G2 Throttle potentiometer, track A5
Injection computer connector B, track D3 Throttle potentiometer, track D3


Checking them cold would work.
Warm is another story, as it will take a while to access the ECU.

Either way, thanks.

Once this is repaired, this car is gone.
Will never buy a French car again.
 
#23 ·
Update:

I changed the battery - had a feeling ...

Now I can let it idle forever without the error coming up.

So, I let it warm up and then idled for 5 more minutes, and then drove off - got the error almost instantly.

Turned it off and back on - the error cleared automatically.

I let it idle for about 10 min and drove off.
Drove it for about 10 miles at up to 60 mph without any issues.

Got the error again as I was driving away after a stop sign.

Turned it off and restarted - the error cleared automatically again.
Turning it off and on clears the error all the time now.

Got home and let it idle for another 10 min without any issues.
I can accelerate in place repeatedly up to 4-5k RPM without any issues.

So, it's a whole lot better but not completely fixed.

Is there some learning that the ECU needs to do?
Would that explain the sporadic errors?


BTW, I saw on a BMW forum, a case where someone had a similar issue and it was the battery.
But his issues seemed to go away entirely after changing the battery.
 
#25 ·
See my last post - it doesn't happen when it's hot anymore.

Now it happened when coming to stop and then driving off.
Accelerating to 60 from about 40 was fine.

Does the ECU need to relearn?

BTW, I disconnected the old battery several times before and it had no effect.
 
#26 ·
So, I let it warm up and then idled for 5 more minutes, and then drove off - got the error almost instantly.

Turned it off and back on - the error cleared automatically.

I let it idle for about 10 min and drove off.
Drove it for about 10 miles at up to 60 mph without any issues.


But you are saying warm here
Got the error again as I was driving away after a stop sign.

Turned it off and restarted - the error cleared automatically again.
Turning it off and on clears the error all the time now.

Got home and let it idle for another 10 min without any issues.
I can accelerate in place repeatedly up to 4-5k RPM without any issues.

So, it's a whole lot better but not completely fixed.

Is there some learning that the ECU needs to do?
Would that explain the sporadic errors?
Not come across one
 
#27 ·
Before, the error came up as soon as it reached operating temp - immediately.

Now it seems to happen when i come to a stop and drive off - maybe that translates to 'under load'.
I'll test it some more tomorrow, but in any case, changing the battery made a big difference.
 
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