Technical Throttle Valve Control Unit

[MashTash]

Good evening all, looking for a little help and understanding of my little Fiat 500 2014 engine management codes please? On way back from a journey to the S.West at the weekend my car started to go into idle mode after the orange engine management & warning light appeared on my display. So pulled in a safe space on a lay bay and called the AA. AA man did a full diagnostic check and on display the following codes appeared;
P0106-Atmosphere/Intake manifold pressure sensor. Signal change rate above limit value.
P1120-Throttle Valveosition signal calculation not OK
P1683-Throttle valve control unit:Malfunction during adaptation specified position not reached.
P1687-Throttle valve control unit:Malfunction during adaptation unexpected operation. Any help or advice would be greatly appreciated thank you Tash

 

[MashTash]

Will be booking into the garage for repair and just need a little advice on possible repairs and if it’s going to be a big job and costly thank you

 

[rmjbn1]

I would start by cleaning the throttle body, MAP sensor, unplug and reconnect associated sensors.

Have you had a look at the hatch wiring?

Common fault that can cause all kinds of electrical problems:

Maybelline has thrown a hissy fit | FIAT 500 (2007+)

Well I suppose it had to happen sometime. Went to visit some friends for a couple of hours, got back in the car, and turned the key to find the dash lit up like a disco. :mad: Initial assessment is that I've got the orange warning triangle, flashing mileage, airbag & seatbelt 'do not drive'...

www.fiatforum.com

 

[MashTash]

I would start by cleaning the throttle body, MAP sensor, unplug and reconnect associated sensors.

Have you had a look at the hatch wiring?

Common fault that can cause all kinds of electrical problems:

Maybelline has thrown a hissy fit | FIAT 500 (2007+)

Well I suppose it had to happen sometime. Went to visit some friends for a couple of hours, got back in the car, and turned the key to find the dash lit up like a disco. :mad: Initial assessment is that I've got the orange warning triangle, flashing mileage, airbag & seatbelt 'do not drive'...

www.fiatforum.com

Thank you so much for some of your technical knowledge it’s greatly appreciated. I will do that and get back to you with the outcome.
Kindest regards Tash

 

[rmjbn1]

Fingers crossed it's nothing serious.

But start by pulling back the rubber boot over the wiring to the hatch door.

If there are any frayed wires here it can cause electrical faults to pop up in surprising places, so don't change any parts until you're sure wires here are sound.

I clean my inlet manifold, throttle body and MAP sensor every year. A little oil finds its way in.

A can of brake or carb cleaner is useful to have. Remove the MAP and spray it, spray brake cleaner on a cloth to clean the throttle body and inlet manifold.

Is the car still running rough, or limp mode?

Did AA clear the codes and turn off the engine management light?

Was any work done on the car prior to the fault?

 

[MashTash]

Fingers crossed it's nothing serious.

But start by pulling back the rubber boot over the wiring to the hatch door.

If there are any frayed wires here it can cause electrical faults to pop up in surprising places, so don't change any parts until you're sure wires here are sound.

I clean my inlet manifold, throttle body and MAP sensor every year. A little oil finds its way in.

A can of brake or carb cleaner is useful to have. Remove the MAP and spray it, spray brake cleaner on a cloth to clean the throttle body and inlet manifold.

Is the car still running rough, or limp mode?

Did AA clear the codes and turn off the engine management light?

Was any work done on the car prior to the fault?

Fingers crossed it's nothing serious.

But start by pulling back the rubber boot over the wiring to the hatch door.

If there are any frayed wires here it can cause electrical faults to pop up in surprising places, so don't change any parts until you're sure wires here are sound.

I clean my inlet manifold, throttle body and MAP sensor every year. A little oil finds its way in.

A can of brake or carb cleaner is useful to have. Remove the MAP and spray it, spray brake cleaner on a cloth to clean the throttle body and inlet manifold.

Is the car still running rough, or limp mode?

Did AA clear the codes and turn off the engine management light?

Was any work done on the car prior to the fault?

Hey apologies for the delay in replying back to your message. I am so very grateful for your abundance of knowledge with helping me understand the dilemma with my car so much better. I have finally found a local Fiat specialist near me who is going to work with me in the repairs. I noted all the valuable info you’ve kindly spent the time in sharing with me. Fingers crossed like you say it’s not too costly, but thanks to you I can at least understand so much more about her problem. I promise to keep you updated on the outcome of the repairs.
Once again so grateful to you
Kindest regards Tash

 

[MashTash]

Fingers crossed it's nothing serious.

But start by pulling back the rubber boot over the wiring to the hatch door.

If there are any frayed wires here it can cause electrical faults to pop up in surprising places, so don't change any parts until you're sure wires here are sound.

I clean my inlet manifold, throttle body and MAP sensor every year. A little oil finds its way in.

A can of brake or carb cleaner is useful to have. Remove the MAP and spray it, spray brake cleaner on a cloth to clean the throttle body and inlet manifold.

Is the car still running rough, or limp mode?

Did AA clear the codes and turn off the engine management light?

Was any work done on the car prior to the fault?

The works I have had done before the fault, December 24; New sump tank, oil filter and sealed, airbag control unit replaced as air bag and seat codes appeared on dash randomly one day, a new back box on the exhaust due to clip rusted. Works were done by Fiat dealership in Southampton. Then I’m May 25; OSF wheel bearing replacement and new brake pads. That’s the works I’ve had so far before this fault.