Technical OBD code P1301. Any clue?

[tthew]

So I misunderstood the garage last time I went in. The code regarding the water in diesel fault cleared OK, it's P1301 that is still standing

According to a list I found, P1301 is 'classification injector' (whatever the hell that means ) but the garage can find no fault. Can one of you geniuses perhaps suggest what the problem might be and/or a remedy? The car is performing fine, there's no black smoke, starting is OK and garage told me the emissions are fine.

Couple of other things, the engine management light is flashing, rather than steady, and it is a 1.3 Multijet.

Thanks again for your help.

 

[adamcot]

Are you sure you got that code right? It seems to be GM specific, but info is sketchy. Only seems to have appeared on US cars....

 

[dave]

code sounds right to me but i have no clue what it means, flashing engine light on a petrol means missfire, not sure if it can mean the same on a diesel

 

[tthew]

I don't know a great deal about these codes yet, (still learning) but I believe that codes beginning in P1 are manufacturer specific.

I'm pretty sure the number will be right, (standard way of reading these if I'm not mistaken?) but the garage likely won't have a Fiat specific reader, their translation gave me injection adaption not programmed which I reckon will be wrong. The translation I gave there came from a fiat specific list I found on 'tinternet.

 

[D4nny8oy]

According to a list I found, P1301 is 'classification injector' (whatever the hell that means ) but the garage can find no fault.

Fiat don't give us a list of EOBD codes as Dealers should be using Examiner which is far more helpful than a generic reader.

Only thing I can think of along those lines is if the injectors serial numbers are not stored in the ECU- a Dealer job. MJet injectors are assigned different 'classes' depending on their flow rate, and when replaced or moved to another cylinder, their codes must be stored to ensure correct operation.

Have the injectors been swapped/replaced or has the ECU been changed?

 

[Davren]

According to the Fiat manufacturers code list I have, P1301 = Classification injector as you say.

As D4nny8oy says, each injector has it's own classification number that need to be programed into the engine management ECU.

Dave.

 

[dave]

do petrol injectors also need to be programed?

 

[D4nny8oy]

No. Not yet anyway.....

 

[tthew]

That's brilliant info, thanks guys. Not changed the ECU or any injectors ever. This started a week or so ago when the car needed jump starting after the cold killed the battery.

Any idea what sort of cost this would be? big job or small?

 

[Davren]

Any idea what sort of cost this would be? big job or small?

As you haven't changed the injectors or ECU, the fault is going to need further investigation so no idea of cost yet.

Fiat Examiner can check the injector classification/registration codes and reset them if neccessary.

Dave

 

[tthew]

yeah, fair point Dave. I just hate it when you take a car to a garage without any clue about the final bill, will it be , or

 

[anyzunstudios]

yeah, fair point Dave. I just hate it when you take a car to a garage without any clue about the final bill, will it be , or

Proceed with engine OFF but KEY ON:
-Get AlfaOBD or MultiECUscan
-Remove your air filter box and engine cover (if any) until you can see injectors.
-Clean the top of injectors with a wet paper and you will see the codes.
-Cilinder 1 is the top left, and cilinder 4 is top right. 2 & 3 are the other two between 1 and for (obviously )
-Take a picture or write on a paper the injectors codes and from what injector is from (1,2,3,4). The code is a mix of letters and numbers on the outside edge on each injector. the code inside close to the center pipe is the reference code, not the injector code.

In my case I tried with a Launch adapter, but I think you will able to do it with those softwares too. On alfaOBD on your phone, pair your OBDII adapter (Bluetooth, USB, Wifi) set the baudrate (9600,38400,115200), COM port (USB), or IP address and port (Wifi). Then choose model, engine, ECU type, go to Active diagnostics and then choose options "classification injector cil.1", click on start, write the code of the injector 1, and proceed. Do it for each injector. Then, clear fault, turn off car battery, wait 10 secs, then turn key to on.

Now you have to get your engine with no faults!
The procedure with MultiECUscan is simmilar to AlfaOBD.
That is what I did with my car yesterday, but I did with a Launch adapter, but it is the same procedure.

Greetings,
Julio.