Technical Punto Error Codes

[beyre83]

Hi long time since my last visit my 05 Speedgear Dynamic has been
fine except the last week she'd been running a tad ruff and then getting
engine management light coming on and off and then engine failure warning
coming up on the screen as well, so i purchased a EDM lead off ebay and then registered the latest version of multiecu scan so i could interrogate the engine ecu

Log File is below

ECU ISO Code: 7C 86 C2 83 1C
01/03/2017 11:33:54 (Multiecuscan 3.5)
CONNECTED TO:
Fiat Punto '03 1.2 16V
Bosch Motronic ME7.3H4 EOBD Injection
--------------------------------------------------------------

ECU ISO code: 7C 86 C2 83 1C
FIAT drawing number: 55188599
Hardware number: 0261208030
Hardware version: 00
Software number: 1037367753
Software version: 0000
Homologation number:
ECU programming date: 02/28/2003

READING ERROR CODES:
1: P1702 - Warning lamp light-up from automatic gearbox
ERROR DETAILS:
Engine temperature: 1.7 °C
Engine speed: 240 rpm
Engine load: 99.00 %
Air temperature: -1.6 °C
Throttle angle: 11.38 deg.
Battery voltage: 5.464 V

No help available
The reason for this fault is that ECU has received very high signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was not activated for this fault.
2: P0300 - Ignition failures (generic)
ERROR DETAILS:
Engine temperature: 61.9 °C
Engine speed: 3360 rpm
Engine load: 109.50 %
Low fuel warning light: ON
Throttle angle: 77.76 deg.
Battery voltage: 13.753 V

Random/Multiple Cylinder Misfire Detected
The reason for this fault is that ECU has received very high signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was activated for this fault.
3: P0303 - Cylinder 3 ignition failures
ERROR DETAILS:
Engine temperature: 61.9 °C
Engine speed: 3360 rpm
Engine load: 109.50 %
Low fuel warning light: ON
Throttle angle: 77.76 deg.
Battery voltage: 13.753 V

The Emissions Monitoring system has detected misfires, an Air/Fuel mixture problem or other indicators of emissions exceeding the permissible level. Check the plugs, ignition and fuel system, and the engine mechanical condition, and that the oil level is not too high, or oil change overdue. Defects contribute also to Lambda sensor degradeation and premature catalytic converter efficiency loss.
The reason for this fault is that ECU has received very high signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was activated for this fault.
4: P0301 - Cylinder 1 ignition failures
ERROR DETAILS:
Engine temperature: 80.0 °C
Engine speed: 3040 rpm
Engine load: 101.25 %
Low fuel warning light: ON
Throttle angle: 55.31 deg.
Battery voltage: 13.753 V

The Emissions Monitoring system has detected misfires, an Air/Fuel mixture problem or other indicators of emissions exceeding the permissible level. Check the plugs, ignition and fuel system, and the engine mechanical condition, and that the oil level is not too high, or oil change overdue. Defects contribute also to Lambda sensor degradeation and premature catalytic converter efficiency loss.
The reason for this fault is that ECU has received very high signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was activated for this fault.
5: P0302 - Cylinder 2 ignition failures
ERROR DETAILS:
Engine temperature: 80.0 °C
Engine speed: 3040 rpm
Engine load: 101.25 %
Low fuel warning light: ON
Throttle angle: 55.31 deg.
Battery voltage: 13.753 V

The Emissions Monitoring system has detected misfires, an Air/Fuel mixture problem or other indicators of emissions exceeding the permissible level. Check the plugs, ignition and fuel system, and the engine mechanical condition, and that the oil level is not too high, or oil change overdue. Defects contribute also to Lambda sensor degradeation and premature catalytic converter efficiency loss.
The reason for this fault is that ECU has received very high signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was activated for this fault.
6: U1602 - CAN line
ERROR DETAILS:
Engine temperature: 70.4 °C
Engine speed: 1000 rpm
Engine load: 32.25 %
Air temperature: 34.4 °C
Throttle angle: 6.32 deg.
Battery voltage: 11.398 V

No help available
The reason for this fault is that ECU has received invalid signal from the sensor. The fault is not detected now, but it is stored in memory. Clear fault codes, and observe for future appearance of the same fault. Dashboard warning light was not activated for this fault.

Any help is much appreciated thanks

 

[Ziggy122]

Highlights of this to make a little easier to read
its a 1.2 16v 2005 mk2b with Auto box

Error codes are

1 - p1702 - Connector Lamp From A/T
2 - P0300 - Multiple / Random Misfire
3 - P0303 - Cyl3 misfire detected
4 - P0301 - Cyl1 Misfire detected
5 - P0302 - Cyl2 Misfire detected
6 - U1602 - Canbus Fault - needs more googling

Right
Tbh the misfires, I'd look at getting the plugs and HT's Done, You've got 3 cylinders and random event misfires, usually because the HT's leads start to arc out instead of going to the plug
or the plugs are now overly resistive (bad gapping potentially) are causing it to mis its sparking event

This is faily cheap and easy todo! DIY task too!

-----

Lamp from A/T fault code
are your brake lights working?
Not got the fasionable disco lights going on? (where putting side lights on and brakes and often indicating causes them to flask like a little mini disco?)
This is an easy DIY fix too - take rear lights off - Clean the connections up
Focus abit more on where the black wires in the plugs align in the lights, as that pin usually corrodes a wee amount and messes up the rear lights....

----

U1602 - I'd be tempted to ignore this one for now
i cant quickly google the an answer for it

----

Hope this helps
Also while your there - P1702 code - battery voltage *6v's?* this is very very low
get the battery and alternator tested - Also can be done free at a local halfords


ziggy

 

[beyre83]

Also while your there - P1702 code - battery voltage *6v's?* this is very very low
get the battery and alternator tested - Also can be done free at a local halfords


ziggy

that could be an old fault code left over i changed the battery over a year ago for a brand new one so that could be a left over event from that, though and changing the HT Leads do i need to fiddle with the coil pack or just unplug from that doing 1 lead at a time so as to not get confused and obviously the spark plugs changed as well so you don't think it's anything terminal then

 

[Ziggy122]

that could be an old fault code left over i changed the battery over a year ago for a brand new one so that could be a left over event from that, though and changing the HT Leads do i need to fiddle with the coil pack or just unplug from that doing 1 lead at a time so as to not get confused and obviously the spark plugs changed as well so you don't think it's anything terminal then

It could forwell be - if the A/T Warning light isn't on Then lets not **** about with it
as long its shifting correctly - has sufficient fluid - Brake lights are working - Speedo's working etc dont worry
it could YES be a stored fault from ages ago

As for the HT leads

Just do them 1 at a time
tbh tho its hard to get punto's wrong
They run a Wasted Spark system

Since pistons 1 and 4 are both going up at same time 1 will be on compression and 4 will be on exhaust
The coil pack still fires to both cylinders
on no1 it'll be vital as it'll cause the power stroke, on cylinder 4, its occours JUST before induction stroke, so no harm done, the spark isn't doing anything useful -hence the wasted spark system

So you can in thoery plug 1and4 over on the same coil - it'll do naff all difference

Remember to not use a ratchet to start spark plugs off - just use the extension bar
That way you have a chance of prevent stripping threads incase you cross thread it

On a good note - the Coil pack holder - looking from battery to Camshaft
you will see 4numbers - 2314 iirc, So if you applied that number position to that cylinders HT lead, it'll be correct

But as i said - just keep it same as you do 1 at a time - you should be fine
hard to get wrong

Ziggy

 

[beyre83]

Thanks Ziggy for the encouragement the only bit that daunts me
is taking the hosing off the airbox as it has them tension strap things
secure the hoses and you need a special tool to take them off don't you?
and are they even reusable or would i need to get new hose clips

i looked under guides only one that i can see somewhat relevant is the throttle
body cleaning one as that explains how to remove the airbox

 

[Ziggy122]

Thanks Ziggy for the encouragement the only bit that daunts me
is taking the hosing off the airbox as it has them tension strap things
secure the hoses and you need a special tool to take them off don't you?
and are they even reusable or would i need to get new hose clips

i looked under guides only one that i can see somewhat relevant is the throttle
body cleaning one as that explains how to remove the airbox

Ah yes - they still have the factory fitted clips

They simply prize apart - Single use im afraid

Just use a Suitable Thickness cable tie - or a jubalee Clip
There the Breather pipes (Reuses the oily vapour from the crank case)

Forgetting your a 16v hahahah

Ziggy

 

[beyre83]

so i took the airbox off it had them clips you squeeze together and they release type of clips on there fair enough... how ever when i was seperating part of the airbox hose assembly one of the smaller hoses snapped in two :S

if someone could tell me what replacement hose i also need would be grand thanks

 

[beyre83]

looks to me to be one of these....

http://www.ebay.co.uk/itm/Fiat-Punt...640160?hash=item21052b3ba0:g:9JAAAMXQJWZRC4ug

 

[Ziggy122]

yup Breather hose split
They break down with age and Heat

Cheap part - as linked

Ziggy

 

[beyre83]

yup Breather hose split
They break down with age and Heat

Cheap part - as linked

Ziggy

Hi Ziggy i boddged that breather pipe back together with some superglue
just so i could test the car after i had replaced the sparkplugs & ht leads
and she purrrrrrs like a pussycattie now i will of cause replace
that pipe at the weekend as the new one should of arrived by then

so thanks for all your help & support only issue i ran into was one of my battery box holding bolts snapped on me :S but i am sure 2/3 will hold it
till i can tap it out

 

[Ziggy122]

Hi Ziggy i boddged that breather pipe back together with some superglue
just so i could test the car after i had replaced the sparkplugs & ht leads
and she purrrrrrs like a pussycattie now i will of cause replace
that pipe at the weekend as the new one should of arrived by then

so thanks for all your help & support only issue i ran into was one of my battery box holding bolts snapped on me :S but i am sure 2/3 will hold it
till i can tap it out

Yea get the parts and then have anothet afternoon getting last bits repaired

2 of 3 battery box bolts will be fine for now

There are 2x smaller bolts holding the battery down as it is

Ziggy