Technical New issue Old problem

[Chopin]

The Twinair stopped rapidly after a Coilpack fail (it's a 2 cylinder thing - no mercy). I had the car taken home as I had 2 new ones and it started immediately they were replaced HOWEVER it is in intermittant limp mode.. I put my fairly useless and cheap OBD reader on but no faults show. My thoughts are the software may need reset but that does sound a bit over the top for a simple fail. Anyone got experience of the same?

 

[steveras57]

You need a decent code reader or MES software!- you can bet there's code in there somewhere?- but cheep generic scanners cant access them!.

 

[Mike1alike]

That’s very typical TwinAir behaviour after a coilpack failure. When one coil dies, the ECU logs misfire faults and can drop into a catalyst-protection limp mode.
Even after replacing the coils, the ECU can stay in a reduced-power strategy until the fault memory and misfire counters are properly cleared. Cheap generic OBD readers often won’t show or clear TwinAir-specific faults.
What to do next:
Scan it with Multiecuscan or dealer-level diagnostics and clear all engine faults
Check live data for misfire counters
Make sure both new coils are the correct spec and the connectors are clean and fully seated
No drama needed, it’s almost always just stored fault logic still active after the original coil failure.

 

[Chopin]

Thanks guys - will follow your advice and revert

 

[Chopin]

As normal always more than one issue got a P0325-12 code being a knock sensor. Mechanic says common for either sensor or coil to help the other to fail. Just going to order one now so next question... Where is it located?

 

[JD2023]

Twinair Knock Sensor error P0325-12 | FIAT Panda (2012+)

Just doing my annual maintenance and noticed this error on Multiecuscan. Car seems to run OK with the normal twin cylinder sounds. I have cleared the code and will see if it comes back. If it does where is the sensor located on the block?

www.fiatforum.com

I Believe Knock sensor code can also be triggered by poor octane fuel

 

[Chopin]

I saw this but it was a lot negative with the photos not showing and the guy not happy to get into the replacement- hoping to hear from someone who has succeeded- re the fuel I started using 98 after they started watering it down with ethanol

 

[Chopin]

Seems I have stumbled on Area 51 as nobody has encountered this sensor but it still exists in the mind - I shall crawl below and fumble around at the weekend

 

[steveras57]

Seems I have stumbled on Area 51 as nobody has encountered this sensor but it still exists in the mind - I shall crawl below and fumble around at the weekend

probably means its gonna be 51 times more difficult than you think to do the blinking job!

 

[Chopin]

A few wasted hours on t'internet trying to locate the Knock sensor on Twinair and many erroneous pieces of guidance led me to look on Ebay at second hand engines for a clue... on about the 20th photo with a lot of magnification I found the little --- . For anyone in same boat see photo. Tomorrow I will see if it can be accessed from below or even by squeezing round back of oil filter

 

[steveras57]

Well done -Don't forget as far as the internet is concerned "Half the lies you hear aren't true"!
Like yourself i have often had to delve into a subject by lateral thinking to find the answer! try asking the jaguar xf forum the location of the differential oil filler plug for example! virtually all the answers i got gave the wrong location!- in the end found the right place via a jaguar parts supplier diagram! so i now apply the proviso of 9/10ths of internet information is bull and look for what i need myself without asking others opinions!.
Except on here of course where everyone's a genius!.

 

[Chopin]

So news is that with some blind surgery the knock sensor can be replaced from top of engine bay.. so saying after doing so on the say-so of my garage and their printout it has made no difference to the regular interruption of performance. Car either runs great or limps - no CEL - I could not clear or see any codes with my cheap reader so disconnected battery for 30 mins as a 'reset' - a whisky required

 

[steveras57]

So news is that with some blind surgery the knock sensor can be replaced from top of engine bay.. so saying after doing so on the say-so of my garage and their printout it has made no difference to the regular interruption of performance. Car either runs great or limps - no CEL - I could not clear or see any codes with my cheap reader so disconnected battery for 30 mins as a 'reset' - a whisky required

Double no ice!

 

[puntodad19]

Yep that looks like a knock sensor.
Parts exploded views are great for detective work. Bike ones are better than car ones, see cmsnl com for instance.....

 

[puntodad19]

And battery disconnection for reset, provided it's done according to procdure can help.....

 

[Chopin]

Update is that I needed to reseat the sensor as the tiny ring key I was using did not have enough purchase. Using my fairly narrow 1/4 ratchet and long 13mm socket got me in the gap and had the leverage to tighten firmly (round head ratchet and normal socket with small extension didn’t fit on many fronts). So with knowledge it is a job not to fear - It was getting that knowledge that was the issue - all the best