Bit of a story with this one if you will bear with me for a second. Back in December 2012 this car came in with the above fault code, we diagnosed a faulty coil 2 and replaced it with an aftermarket one. Then in March 2013 it returned with the same fault, this time we couldn't find a problem so due to inexpensive parts the customer requested we replace the other coil along with plugs & leads, bear in mind the vehicle has only covered approx 4000miles at this point, all aftermarket again. In October 13 we see it again for the P0350 code and diagnose a faulty coil 2 again so this time we replace it with a genuine FIAT at no cost to the customer! In Feb 14 we were seeing it again, we couldn't fault it but we replaced coil 1 along with plugs and leads, all genuine FIAT again to be sure; by this point the car has had all ignition components replaced with genuine and it still hasn't covered 5000 miles since new!
The customer came in again last week to say the car has had the light coming on everyday for about the last month for approx 20mins at a time, he took it to FIAT for their opinion, they have, according to their sheet, updated the ECU software for a coil issue and told him that the cat may or may not be faulty but they cannot say for sure without an additional 3hrs diagnostic time!!
I have just plugged my scanner in today because he still has the exact symptoms, MIL illuminated, car runs fine but gobbles juice! I have indeed retrieved a P0420 for cat efficiency but the P0350 is also there, the cars is perfect at present so I am reluctant to replace any cat without sorting the coil issue first.
Any ideas boys because I'm at a loss with this one???
Thanks Craig
P.s. all DTCs are listed as intermittent obviously
I used to get a few of these which turned out to be a faulty ECU. Test and replacement from BBA was about 250 notes if my memory serves me correct. Replacement ECU was free-run and came with two coils. After fitting, a cam/crank sync was required to clear the EML warning light.
Have you had this on such late model FIATs too, i know there were common issues with the earlier ECUs and coils but there have been so many modifications i would assume they've sorted the problem? The older vehicles i've dealt with have also always had a definate misfire due to the ECU losing its trigger where as this seems to run fine?
To be fair, I have not had this on the later vehicles. Most, but not all in the past did present an intermittent or permanent misfire. When I sent the ECU's off for testing, most could not be found to be defective but I took a chance on recommendation that it is a common fault.
You appear to have replaced the coils and plugs with original parts but the fault remains. It may be worthwhile having a chat with BBA or someone similar to see if this fault is still present in the later vehicles.
Posted by Craig Hewison on November 7, 2014, 11:36 pm, in reply to "Re: FIAT Panda 1.1 Coil Issues" Edited by board administrator November 10, 2014, 12:57 pm
Hi
Customer sold this vehicle before i got chance to come up with a fix im afraid!
on May 27, 2014, 5:40 pm, in reply to "