Ford Fiesta 1.4 TDCi 2007 - Power train warning lamp, code P0380 - Unresolved #
Posted by Martin Simonsohn on June 17, 2011, 12:09 pm
Year of Manufacture *: 2007 Engine Size and Code *: 1.4 engine code 6 ( Optional ) Scanner Used: verus ( Optional) Fault Codes: p0380
customer reports the orange exclamation warning lamp flashes and loss of power.
fault codes set for p0380 glow plug control circit A the glow pugs have been removed and bench tested they glow up nicley within 5 seconds all the same
have tested fuel filter heater circit through relay and heater itself working correctly.
engine,air and fuel temp sensors are not dropping out during warm up and seem to be returning a good clean signal.
the injectors have NOT been removed though i was thinking about carrying out spill test though assesability looks to be a little aukward.
does anyone have any sugestions as to spill test method without disturbing too much and wondering about scoping the fuel pressure sensor to detect fuel pressure drop on the rail in time with a faulty injector ie too much spill = drop in fuel pressure.
reading through the archive there seem to be alot of injector problems cused by cleaning/removing so im a bit worried about distubing them and the spills look like they are going to be challenging to get to.
the fault is also intermittent and could not get to replicate it on road test.
I would also be trying to clear the p0380 fault code before looking for anything else, ( obviously when you fix that problem and the car still has a another problem the customer will get annoyed with you and tell you that the glow plugs have nothing to do with it and your looking for the wrong problem and you don't know what your doing )
I have had a few of these in with glow plug problems and if all 4 glow plugs or or anything on that circuit is Open circuit then it will go into limp home mode.
The Code description on Lexia that I was getting was something like "Glow plugs controlled but not supplied".
Have you checked the glow plug relay and wiring to it. ?
I have fixed some by swapping the relay, But I had one that had been fitted with a second hand ecu kit by another garage and it was permanently in limp mode and wouldn't rev up properly, The Garage that did it also swapped the relay but it didn't cure it, I checked all the wiring back to the ecu and it all checked out ok So after trying another relay I suspected a Faulty ecu or the car that the Ecu was off used a different type of relay. ?? On that one I bodged a warning light into one of the control wires and it came out of limp mode and drove fine, The Customer was Happy to try it at that and it has never returned, so i assume that its still running ok. OR he's sold it.
hi thanks for the replies my reasoning for a leek test on the injectors is because the po3 is a fueling/ignition code and the car randomly drops into limp, i could not pick out any problems with the live data the fuel pressure looked to be steady. but the problem is that i could not replicate the fault.
tony. thanks for the reply do you know what current one of the heaters should draw from cold and how long they should take to glow i did test the glow plug relay supply for drop in voltage both to and from the relay and at the preheaters all tests were below .5v and the vehicle was switching the heaters on from cold. also the coolent temp tested ok with no dropouts from cold and up to temp.
the only thing im not sure of is the time it took to glow plugs to full heat thought 5 sec was a little slow but thought as all of them did the same should be ok.
Hi Martin, Your fault code listed is; P0380 Ford Glow Plug/Heater Circuit A.
This code may cause the system to run in a LOS, but should not cause a intermittent loss of power/limp home.
I would not check the Glow plugs by removing and bench testing,(some of them do not work off 12volts any more) A quicker safer way may be to use an Amps clamp. and perhaps a volt drop test between Batt+ and the glow plugs.
You say the readings looked good, but what actual were the readings.
What is the supply line reading?
What is the duty cycle of the control circuit for the high pressure pump?
What is the history of the vehicle?
What is the fuel like?
Regards MarkModern cars, Its all wizardry and witchcraft
hi mark thanks for reply when i tested the supply to each of the heaters i checked for voltage drop/loss and there was about .5v at the hearters and that is from the heater relay to the glow plugs.
i did find that one of the heater fires had been rubbing on the air filter housing i have put some insulation tape to cover the damage to OUTER casing and routed so as not to cause any further problems.
i diddnt check the imv valve at the pump.
at the moment my customers customer has the car back to try and make the fault reocur wth the hope that infomation can be passed on as to how to make the fault show itself.
on June 19, 2011, 7:34 pm, in reply to "
