Morning all,

I don't have the jobsheet to hand, but the car went into the garage who checked out the wiring and throttle position sensor - the sensor has now been changed. Cost £170 for the part and labour which I think is reasonable.

Car has been working fine the past few days, I'm hoping that will be the lot now but I am not going to discount it cocking up again based on what typecastboy said!

Ouch. I bought a pedal (sensor) for £30 on eBay. Couple of long reach bolts and a cable connector and if was changed. Hopefully it will sort it for you.

Hi, first sorry for my english im french...
But i have the same problem error p1220 on my fiat 500 1.2 lounge ,

i have change the body of the trottle, the maf sensor and get the fault...


I have see if i clear the code and i restart my car got a good acceleration and the error come when i pull the pedal on "max"...

I have see the sensor page 3 but i dont found on my car....
You say you have change your throttle position sensor from 170 in garage to 30 in ebay but this sensor on page 3 ? or another ? and where i can found this ?

really thanks for your response and so sorry for my english,


Thx

Hi,
Throttle position sensor is mounted on the throttle (gas) pedal bracket in the footwell. Does sound like it may be faulty. Diagnostic software like Multiecuscan will allow you to check it properly, but it's cheap enough to just change it if you do it yourself.

Robert G8RPI.

hi !!

Thanks ,
I have use multiscan and error found :
p1220
Potentiometer pedal accelerator

I have a question, i see the sensor on page 3 (i cant add a url because im new user)

but the sensor on my pedal doesnt look like of the sensor page 3,

What is the sensor on page 3 and where i can found this ?

I clean the sensor on my pedal gaz but i have the same error, i bought new one for the replacement i wait ....

thanks for your ansmer you really help me ,

:slayer:

There are two things to try. I tried both. Replace the entire throttle pedal which is fly by wire and includes the sensor and change the throttle body which is the part that contains the butterfly valve where the airbox sits. I did both but neither made a difference. I ended up with the car in a workshop and it was found to be a slight voltage error in the body ECU. I bought a used one on eBay for about £60 and had to spend £150 having it reset/virginised. That did the trick. The incorrect voltage fooled the main ECU into thinking it was the throttle position sensor.

spity74 said:

hi !!

Thanks ,
I have use multiscan and error found :
p1220
Potentiometer pedal accelerator

I have a question, i see the sensor on page 3 (i cant add a url because im new user)

but the sensor on my pedal doesnt look like of the sensor page 3,

What is the sensor on page 3 and where i can found this ?

I clean the sensor on my pedal gaz but i have the same error, i bought new one for the replacement i wait ....

thanks for your ansmer you really help me ,

:slayer:

Click to expand...

Hi,
Page 3 of what?
To further confirm the fault is the pedal sensor use MES with engine stopped and on the parameters tab tick the boxes for Throttle position %, Throttle position track 1, and Throttle position track 2. As you press the pedal slowly they should move together (the tracks may be different values but should change together). I suspect from your description that one track will suddenly jump near full throttle. It does not sound like an ECU fault.

Robert G8RPI.

Hi everyone,

We now have the invoice back from the garage and in fact it was the entire throttle pedal that was changed, not just the sensor.

So they read the code, replaced the pedal and tested it out. It was 1.5 hours labour in total for the part replacement and fault reading/testing.

The car has been working fine since, it seems that although the error code is the same maybe the precise problem is not quite identical.

As always, I hope this will be the end of the problems now!

I dread to think how much they charged for the pedal? I bought one for £30

I think it was around the £55 mark for the pedal. I imagine it's the retail price from Vospers (local Fiat dealer) as I believe that is where they source the parts from.

It was a fair price, if she had taken it to Vospers I am fairly certain it would have been over the £300 mark. Plus the car is still fixed

I know this is an old post, but for who is in need for a fix of the same problem, I stumbled upon this good fix on youtube:
https://youtu.be/VaLWkyfFHj8

Hello folks, All this info has been really helpful.

I have a Fiat 500 pop turbo


One day after driving low and high speeds I took off from a light and it went into "gimp mod". At that time the only code showing was P160A

I then cleaned the throttle body and was recommended to add in some fuel treatment. I was able to drive the car for 10 miles through stop and go traffic before it went into "gimp mod" so just cleaning the body didn't help.. Then I took the body totally off and cleaned the butterfly and body. This time it threw codes P160A, P0222 and P0123

I ordered a reconditioned throttle body and just swapped that out. I started the car up and it went into "gimp mod" in seconds throwing those same three codes. I cleared them and let the car sit for a bit. Second time I started the car it sat idling for 15 min before it threw the same three codes.

I am about to lose it. I am not as healthy as I once was and working on this car between chemo treatment has been a task in hand. I have a new Euro shop in town I am thinking about going to go and talk to them. I just want to make sure they have someone savvy with Fiat and I am not just dumping money into labor I have already done.

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