Technical GP 2009 Petrol / LPG 1.2 8V - Understanding Lambda Readings

[Komuta35]

"The idle air correction value is too high. Idle Air Correction: Reaches up to 6553.5%"

 

[jackwhoo]

"The idle air correction value is too high. Idle Air Correction: Reaches up to 6553.5%"

Or it is a glitch in the software.

 

[jackwhoo]

Do you know what idle air correction refers too?

 

[Komuta35]

"At normal driving, it is 0%, but at idle, this value occurs. It showed correctly once at idle. Now, at idle, the trip computer is rapidly increasing the km/l value."

 

[jackwhoo]

Find out what idle air correction refers too.

Sitting with car not moving engine idling will of course cause l/km to go up....using fuel going no where

 

[Komuta35]

"The long fuel cut and short fuel cut are malfunctioning. Because of this, the LPG adjustment is not working properly."

 

[jackwhoo]

"?" Who are you quoting?

 

[jackwhoo]

If this is an lpg only problem I am not going to try and help any more

 

[francocm]

What symptom are you actually observing beyond the data?

I don't recall the details from 2015 now (10 years ago!), however I do recall at some point a long time ago changing the LPG injectors and getting them properly resealed. I don't recall whether that case was related to this one above.

Unfortunately I don't think I can help you much more than that

 

[francocm]

"The idle air correction value is too high. Idle Air Correction: Reaches up to 6553.5%"

65535 (ignoring the floating point) happens to be the maximum value of an unsigned 16-bit integer. 2^16 = 65536, however 65536 is the total number of values, and with 0 also being a value, gives you 65535 as the maximum when all bits are set to 1.

In other words, a 16-bit value has all the bits set to 1 (1111 1111 1111 1111).

As a hunch, I would say that this is more likely some "default" value, or "no reading", rather than literally meaning 6553.5%.

 

[Komuta35]

I am experiencing all the same problems you are experiencing. LPG and gasoline have the same problem. If you go back to the beginning of the post, I am struggling with the same problem you experienced then.

 

[Komuta35]

When you open this post, just remembering how you fixed the error or what caused the error is enough.

What symptom are you actually observing beyond the data?

I don't recall the details from 2015 now (10 years ago!), however I do recall at some point a long time ago changing the LPG injectors and getting them properly resealed. I don't recall whether that case was related to this one above.

Unfortunately I don't think I can help you much more than that

 

[Komuta35]

65535 (ignoring the floating point) happens to be the maximum value of an unsigned 16-bit integer. 2^16 = 65536, however 65536 is the total number of values, and with 0 also being a value, gives you 65535 as the maximum when all bits are set to 1.

In other words, a 16-bit value has all the bits set to 1 (1111 1111 1111 1111).

As a hunch, I would say that this is more likely some "default" value, or "no reading", rather than literally meaning 6553.5%.

Yes, one sensor is reading incorrectly, but what is the problem? The LPG coils and hoses have been replaced. LPG can no longer affect anything. Could it be the throttle body or the oxygen sensor? I wish you could remember any possibility.