Hi.
After an return of the hesitation I have checked the live data and it's looking like there is no supply to both banks for the heaters of the lambda sensors.
I can find no reference to a fuse for them in the handbook, I cant believe Fiat have no fuse for these in the Panda so I can only assume its not mentioned in the handbook.
Can someone tell me the fuse number and location please. The car is a 2014 Panda 1.2 both lambda sensor cables run under the ECU and no doubt into the under bonnet fuse box.
Help please as this getting frustrating now

A wee bump on this..... anyone?

Look for condition of heaters from a cold start, that's when they should definitely be on.

Check wiring diagram for fuses.
I don't think they are fused from ECU to heaters.
Put me right if I'm wrong.

jackwhoo said:

Check wiring diagram for fuses.
I don't think they are fused from ECU to heaters.
Put me right if I'm wrong.

Click to expand...

Thanks Jack.
Not to be fused is a serious issue, the heaters can short out and without fuse protection could be termed a fire risk. I wasn't able to do further checks today but I'll check for 12v at the heater when I can.

murphyv310 said:

Thanks Jack.
Not to be fused is a serious issue, the heaters can short out and without fuse protection could be termed a fire risk. I wasn't able to do further checks today but I'll check for 12v at the heater when I can.

Click to expand...

Possibly the ECU is programmed to protect the heater circuits?

The mil should light and a code set if either lambda heater non functional.
There is a separate code for each heater.

jackwhoo said:

The mil should light and a code set if either lambda heater non functional.
There is a separate code for each heater.

Click to expand...

I agree, Alfa Obd and Torq actually report the same issue, oddly the MIL light is off.

murphyv310 said:

I agree, Alfa Obd and Torq actually report the same issue, oddly the MIL light is off.

Click to expand...

What are the pxxxx codes you have?

jackwhoo said:

What are the pxxxx codes you have?

Click to expand...

Hi Jack.
I'll need to check it again later as my memory is rubbish and I also forgot to write it down..... 63 and a heart bypass then you forget the simple things.. . Oh dear.

Here is a screen shot off torque.
Didn't work through the app.
Here's a photo. I whipped out the sensor and cleaned it with carb cleaner and the codes have now gone but I get this message now.
Still no MIL light !!!

I don't use torque.
It doesn't look very useful .
Which sensor did you attempt to clean with carb cleaner?
Did it look sooty or white?

What were the pxxxx codes before they disappeared?

The first sensor pre cat. It was pretty sooty. Funny I replaced the air filter at the same time as the plugs, it was really filthy. As far as I can tell although the book was stamped the 18000 mile service was never done.
Alfa Obd now reports on the live data when the engine is nearly at full operating temperature that both sensors are now closed loop which is correct, previously sensor 1 stayed open loop. Will give the car a run tomorrow and see how it feels.

Good luck tomorrow.
Iffy wiring to the regulating lambda sensor that you removed and replaced perhaps.

jackwhoo said:

Good luck tomorrow.
Iffy wiring to the regulating lambda sensor that you removed and replaced perhaps.

Click to expand...

Had a good look at the cabling and also checked for heater volts and both were fine. TBH I doubt I'd ever go near the Fiat dealer, if they can't do even a simple service and blatantly lie about a door seal that was to be replaced then I'd not trust them to diagnose this fault. Plus the year long used car warranty doesn't cover sensors or electronic diagnostic.

The Fiat multiscan would pay for itself on just two sessions so I'll be getting one as soon as.

Hi, trev when i got mine in oct 16 service book stamped ...plugs worn, air filter black, and pollen filter had 2013 stamp on it. I think the dealer just flushed the oil. Hope yours is sorted soon.Dealers happily take our money...but thats it iam waiting for that e mail saying your service is now due ..p***off.!!

Please don't let this descend into a load of complaints and moaning against; dealers, garages, mechanics , Fiat ...... Etc
We know there is good , bad and everything in between , in most things.

jackwhoo said:

Please don't let this descend into a load of complaints and moaning against; dealers, garages, mechanics , Fiat ...... Etc
We know is good , bad and everything in between .

Click to expand...

Their reputation isn't very good from reading many threads or my own experience, you can't deny that can you.