2013 Ford Fiesta stuck in limp mode
Discussion
I bought a 2013 fiesta 1.6 ST about 18 months ago. Over the last year it has, once every 1 or 2 months, gone into limp mode and the Coolant temp shot up. I’ve checked the coolant and it’s at a normal level. I’ve had to restart it and it’s been okay but when I code read it nothing comes up. Today, after it had been sat for 3 days, I started it, the engine lights come on and the coolant temp shot upon the dash. Limp mode followed. However this time it is permanent. I’ve code read it and code U1035 - missing/incorrect data for primary ID and cylinder heat protection were there. When cleared, they return after 30 seconding if the engine is running.
Has anyone had this problem and if so could you please tell me what you did to fix it as the car is unusable until I can.
kind regards,
ben
Has anyone had this problem and if so could you please tell me what you did to fix it as the car is unusable until I can.
kind regards,
ben
Googled that code and it suggests a module has stopped communicating. Says to look for loose connections or damaged wiring (or faulty module). With the loss of comms any value normally read from the module defaults to safe value.
This could be your temperature sensor, if that counts as a module. Defaults to a "safe" value which in this case is "too hot" because this is a safe assumption in the absence of any real value. This triggers limp mode to protect the engine.
For a first try I'd find the temp sensor, look at the wiring to it for any damage, unplug and refit any connectors (look for water ingress or corrosion, clean if possible). If nothing found try it again in case reseating the connectors has helped. The occasional intermittent faults that then turn permanent suggests a wiring issue to me.
Having eliminated that it could be a faulty sensor but it may better checked at a garage. Sensors not usually that hard to change but I can't say for the Fiesta.
This could be your temperature sensor, if that counts as a module. Defaults to a "safe" value which in this case is "too hot" because this is a safe assumption in the absence of any real value. This triggers limp mode to protect the engine.
For a first try I'd find the temp sensor, look at the wiring to it for any damage, unplug and refit any connectors (look for water ingress or corrosion, clean if possible). If nothing found try it again in case reseating the connectors has helped. The occasional intermittent faults that then turn permanent suggests a wiring issue to me.
Having eliminated that it could be a faulty sensor but it may better checked at a garage. Sensors not usually that hard to change but I can't say for the Fiesta.
Ben1357 said:
It was a hella one, unfortunately. Is the best bet to take it to Ford do you think?
It may be, the basic code reader often don’t give you the proper title for specific cars. Google helps but in this case the Google results are not specific to the car you have and are just generic comments for that fault code.Ben1357 said:
It was a hella one, unfortunately. Is the best bet to take it to Ford do you think?
It'd probably be cheaper just to try a new temperature sensor on it, does the coolant fan switch on when the car goes into limp mode? If it does this would back up the temp sensor being faulty.njw1 said:
Ben1357 said:
It was a hella one, unfortunately. Is the best bet to take it to Ford do you think?
It'd probably be cheaper just to try a new temperature sensor on it, does the coolant fan switch on when the car goes into limp mode? If it does this would back up the temp sensor being faulty.Gassing Station | Home Mechanics | Top of Page | What's New | My Stuff