Technical Panda (169) 1.2i MR2006 - error P1220 issue (vs. oil level)
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Technical Panda (169) 1.2i MR2006 - error P1220 issue (vs. oil level)
40% of engine cooling is by oil not coolant
Reducing the oil means the engine gets to temperature quicker
Which is why I asked if it failed more often hot or cold, which has been answer of random gave no clues
Power side of Track A of the gas pedal goes off to the coolant circuit, ground side goes off to the compress circuit, exactly how it's all wired up depends on whether the car has Aircon or not, which is why I asked
Its quite likely the power and grounds will be used elsewhere as well
Was a throttle relearn done after the throttle body was changed
Was a throttle relearn done after the gas pedal. Was changed
Reducing the oil means the engine gets to temperature quicker
Which is why I asked if it failed more often hot or cold, which has been answer of random gave no clues
Power side of Track A of the gas pedal goes off to the coolant circuit, ground side goes off to the compress circuit, exactly how it's all wired up depends on whether the car has Aircon or not, which is why I asked
Its quite likely the power and grounds will be used elsewhere as well
Was a throttle relearn done after the throttle body was changed
Was a throttle relearn done after the gas pedal. Was changed
Negative from the accelerator pedal goes to the compressor
Positive to the cooling system
Personally I would think the problem was on the positive side, any voltage drop will cause a mismatch
The easiest option would be to put a flight recorder on and record track a and b and see if a mismatch occurs
Assuming it does you could put an oscilloscope on the positive and negative and view the graph
Without oscilloscope you'll have to go through some elimination, most of the Aircon can just be disconnected for example
Have you taken the earth strap off the gearbox and chassis rail and cleans up the ends and where they bolt to
K055 = gas pedal
Positive to the cooling system
Personally I would think the problem was on the positive side, any voltage drop will cause a mismatch
The easiest option would be to put a flight recorder on and record track a and b and see if a mismatch occurs
Assuming it does you could put an oscilloscope on the positive and negative and view the graph
Without oscilloscope you'll have to go through some elimination, most of the Aircon can just be disconnected for example
Have you taken the earth strap off the gearbox and chassis rail and cleans up the ends and where they bolt to
K055 = gas pedal
Before you give up at least try disconnecting the linear sensor
Pin 3 of the ECU is shared between the gas pedal and this A/C sensor
Being at the front it's in the elements
Pin 3 of the ECU is shared between the gas pedal and this A/C sensor
Being at the front it's in the elements
After some time, there I go with an update (btw, @koalar: you found it right - its me on that CZ forum you posted - I have all your electrics-related issues stored for further use - once it happens there is a qualified electrician available to me - at the moment there is none, and I am a mechanical engineer only):
First: I thought it might be somehow related to oil levels, but it is NOT. Unfortunatelly. Despite low oil P1220 happened twice in short succesion = so I refilled to (almost) full oil content (2,7l) again.
Second: After extensively communicating with local (CZ) ECU-unit-focused entities I came to realisation it might be (an accumulated) SW and/or HW error and eventualy came to following conclusion: I may get an OEM new! (unsused) and identical unit (Fiat code 51758235) incl. sw config (= immo pairing) locally. So I will sooner or later go this way, thought it will be rather costly.
Will update then.
First: I thought it might be somehow related to oil levels, but it is NOT. Unfortunatelly. Despite low oil P1220 happened twice in short succesion = so I refilled to (almost) full oil content (2,7l) again.
Second: After extensively communicating with local (CZ) ECU-unit-focused entities I came to realisation it might be (an accumulated) SW and/or HW error and eventualy came to following conclusion: I may get an OEM new! (unsused) and identical unit (Fiat code 51758235) incl. sw config (= immo pairing) locally. So I will sooner or later go this way, thought it will be rather costly.
Will update then.
If you could replicate repeatedly it would be easier to sort out
Total intermittent, where the failures are far apart are more troublesome
You have to do something, then wait, put it back to original and see if the fault comes back
Personally I disconnect the linear sensor (less than 2 minutes to do) same power wire as the accelerator pedal and see how it goes
Unfortunately fiat share the wiring, the earth goes somewhere on the cooling side
If it's not the pedal which has already been changed, these are the areas I would be looking at first
Corrosion on the pins or connector is very common, and lead to inconsistent operation,this is a panda or ka MK2 gas pedal can't remember now, it needs cleaning with switch cleaner as well as the connector on the harness
Blocked drain scuttle causes water to run inside the heat duck and drip out near the pedal
I know of very few ECU failures, oil pressure switch, physical pin broken, injector error, physical broken pin due to constant wiggling the wires, couple ignition coil drives fryed mainly running the car with a misfire, in 10 years only one intermittent fault on crank sensor, and the car was on a steep hill in a hot country, for this sort of fault it's clutching at straws, possible but it would be literally millions to one chance,
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Thanks for further leads/hints.
As I wrote, all related components (pedal throttle, sensors) have already been replaced with new ones + consecutively all their connectors checked for corrosion, bent pins etc = no problems found.
As I wrote, all related components (pedal throttle, sensors) have already been replaced with new ones + consecutively all their connectors checked for corrosion, bent pins etc = no problems found.
