Yes I'm back! hehe.
AO Silver Member
Join Date: Feb 2009
Location: South Africa
Weird non-existent electronic error.
I know this is a very weird one. Ok so before I go any further, please note that I’ve got Alfadiag and have read and cleared the errors many times. So please don’t tell me to go have the error read or cleared. I’ve also had the pedal checked out by several independent electronics specialists. The Battery is of the correct size and is about 6 months old from a good brand.
The problem is this, I keep getting error popping up on the MFD. If it was just the error it would be fine, but the error puts the car into “Limp” mode. This limits my RPM to +- 5500 and the Selespeed to 1st and 2nd gears. This means a top speed of 70 Kph. This is a real problem when the limit on the highways is 120 Kph.
The error displays in 2 parts on the MFD. First up is the “Motor System Control Failure” followed immediately by the default “Selespeed System Failure.”
When reading the error with alfadiag or fiat scan, the errors are related to the accelerator potentiometer, being out of range or not present.
I can clear it with the PC. First clear the Engine ECU then the Selespeed one. Start the car and drive till the next time. Which happened so frequently at this point that I’ve found another method.
I’ve found that I can make the error go away by simply stopping the car. Turning it off, waiting about 30 seconds with my foot off the brake pedal, put the key back in and start the car again. It beeps the Selespeed error for a moment then clears it. This procedure can be completed @ the traffic lights.
I’m at a loss here. The dealership wants to replace all the ECU’s and my indi recons it’s a dodgy earth lead. The trouble is it’s not a loose wire/ shorting. I just fixed an issue like that. The thing with a loose wire is that it would typically happen when the car goes over a bump. This issue has seemingly no commonality.
This morning it came on, while parked with the hand brake on at the traffic lights and then stayed off over a very bumpy section of road, only to go on again 5 km after that. The use of the pedal or lack thereof has no bearing on the problem. There is no pattern that I can perceive, other than maybe it happens more when heading downhill, but not always. It also occurs more often in the morning and less so through the day or at night.
What can I do? Any ideas will be welcome.
Keithy says: "I think you put too much sugar on your cornflakes!