General - Fault code EFI 716 717 on a V70tdi 1998

Supercalm · Jun 8th, 2015, 11:28

I have a V70 tdi 1998 that has a intermittent fault which it has had for a while
but has been getting worse recently. It will stall on me while driving. I'm never sure when it will happen? When this happens emission light comes on and I've had the fault code EFI 716 and 717 Has anyone else had these codes and had to deal with similar problem????

dingov70 · Jun 9th, 2015, 06:19

EFI 716 refers to fuel quantity signal and EFI 717 comes back as MFC position transmitter , which is all i can find at present . Personally i would change fuel filter , no matter how recently it was done .

Try these people they are fairly close to you

Decypher Diagnostics
1 Bryn Siriol
Flint, Flintshire, United Kingdom CH6 5JB

They should be able to offer more info

Supercalm · Jun 14th, 2015, 20:55

Many thanks for your reply. I've certainly had fuel filter changed in the past and the fault still has occurred. At the moment it seems like this is a problem with the fuel pump? Its a costly job to have reconditioned and fitted. Around £700. If this isn't the intermittent fault its a very costly job! I'll certainly contact the company you mentioned see what they think.

dingov70 · Jun 15th, 2015, 20:58

just a stupid idea that leapt into my head , it may be your stop solenoid loosing the power to keep it open & it cuts the engine as it closes . If you stand looking at the injection pump the solenoid is fitted on top of the rusty section where the injector pipes are fitted , make sure the lead is tight & getting a constant 12 volts . daft but it could be as simple as that

keep us posted

PNuT · Jun 20th, 2015, 18:29

716 is the sensor in the top of the pump IIRC

Supercalm · Jun 22nd, 2015, 12:48

I've taken it back to garage and they will check solenoid. If that seems fine then it will be the fuel pump that will be sent off and reconditioned. Will certainly let you know how I get on and thanks for your advice. Much appreciated.

martin_r_smith · Jun 22nd, 2015, 17:31

Hmmm if you can plug it in to vol fcr and read what the injection quantity is at idle when upto full operating temperature, I can tell you if it's knackered or just needs a slight adjustment.

Supercalm · Jun 23rd, 2015, 16:04

The main problem with diagnosing this fault is its a intermittent. So the car runs fine and will simply cut out and stall, at any time in the journey. It used to be quite rare for it to do it but over time its become more and more often to a point where it can be up to once a week. The strange thing is that once I've pulled over it will start up straight away and I can drive off?
The solenoid plunger has now been removed so I'm going to see if that will eliminate the fault?

martin_r_smith · Jun 24th, 2015, 17:05

Ok see how it goes without the plunger. If it hasn't fixed it, post up that number I mentioned.

Supercalm · Jul 6th, 2015, 19:43

Ok, so far the car hasn't staled! As its a intermittent fault I'm not going to get too excited. I have some long runs coming up and that will test if its been fixed.
If its fixed it I'll certainly let you know as I wouldn't want anyone have to deal with this problem.

Jun 8th, 2015, 11:28	#1
Supercalm New Member Last Online: Oct 3rd, 2016 10:09 Join Date: Jun 2015 Location: Abergele	Fault code EFI 716 717 on a V70tdi 1998 I have a V70 tdi 1998 that has a intermittent fault which it has had for a while but has been getting worse recently. It will stall on me while driving. I'm never sure when it will happen? When this happens emission light comes on and I've had the fault code EFI 716 and 717 Has anyone else had these codes and had to deal with similar problem????

Jun 9th, 2015, 06:19	#2
dingov70 Master Member Last Online: Today 19:48 Join Date: Jan 2015 Location: Blackpool	EFI 716 refers to fuel quantity signal and EFI 717 comes back as MFC position transmitter , which is all i can find at present . Personally i would change fuel filter , no matter how recently it was done . Try these people they are fairly close to you Decypher Diagnostics 1 Bryn Siriol Flint, Flintshire, United Kingdom CH6 5JB They should be able to offer more info __________________ To stupidity & beyond

Jun 14th, 2015, 20:55	#3
Supercalm New Member Last Online: Oct 3rd, 2016 10:09 Join Date: Jun 2015 Location: Abergele	Fuel pump Many thanks for your reply. I've certainly had fuel filter changed in the past and the fault still has occurred. At the moment it seems like this is a problem with the fuel pump? Its a costly job to have reconditioned and fitted. Around £700. If this isn't the intermittent fault its a very costly job! I'll certainly contact the company you mentioned see what they think.

Jun 15th, 2015, 20:58	#4
dingov70 Master Member Last Online: Today 19:48 Join Date: Jan 2015 Location: Blackpool	just a stupid idea that leapt into my head , it may be your stop solenoid loosing the power to keep it open & it cuts the engine as it closes . If you stand looking at the injection pump the solenoid is fitted on top of the rusty section where the injector pipes are fitted , make sure the lead is tight & getting a constant 12 volts . daft but it could be as simple as that keep us posted __________________ To stupidity & beyond

Jun 20th, 2015, 18:29	#5
PNuT MaDMaN Last Online: Nov 26th, 2022 18:47 Join Date: Sep 2006 Location: Red Lodge	716 is the sensor in the top of the pump IIRC __________________

Jun 22nd, 2015, 12:48	#6
Supercalm New Member Last Online: Oct 3rd, 2016 10:09 Join Date: Jun 2015 Location: Abergele	I've taken it back to garage and they will check solenoid. If that seems fine then it will be the fuel pump that will be sent off and reconditioned. Will certainly let you know how I get on and thanks for your advice. Much appreciated.

Jun 22nd, 2015, 17:31	#7
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Hmmm if you can plug it in to vol fcr and read what the injection quantity is at idle when upto full operating temperature, I can tell you if it's knackered or just needs a slight adjustment. __________________ 1983 244

Jun 23rd, 2015, 16:04	#8
Supercalm New Member Last Online: Oct 3rd, 2016 10:09 Join Date: Jun 2015 Location: Abergele	Intermittent fault The main problem with diagnosing this fault is its a intermittent. So the car runs fine and will simply cut out and stall, at any time in the journey. It used to be quite rare for it to do it but over time its become more and more often to a point where it can be up to once a week. The strange thing is that once I've pulled over it will start up straight away and I can drive off? The solenoid plunger has now been removed so I'm going to see if that will eliminate the fault?

Jun 24th, 2015, 17:05	#9
martin_r_smith Premier Member Last Online: May 10th, 2022 21:01 Join Date: May 2009 Location: Wiltshire	Ok see how it goes without the plunger. If it hasn't fixed it, post up that number I mentioned. __________________ 1983 244

Jul 6th, 2015, 19:43	#10
Supercalm New Member Last Online: Oct 3rd, 2016 10:09 Join Date: Jun 2015 Location: Abergele	Seems to fixed!?! Ok, so far the car hasn't staled! As its a intermittent fault I'm not going to get too excited. I have some long runs coming up and that will test if its been fixed. If its fixed it I'll certainly let you know as I wouldn't want anyone have to deal with this problem.

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