[ajmat]

I would start with the wiring. Due to broken connections, the other components show up as defective

[Epic]

Originally Posted by ajmat

I would start with the wiring. Due to broken connections, the other components show up as defective

That is the first thing we started with fearing a rat bite or loose connection but all wiring are intact.

[ajmat]

What were the Fuel Management error codes?

Does the glow plug light come on and switch off?

[Epic]

Originally Posted by ajmat

What were the Fuel Management error codes?

Not sure what the fuel management error codes were, will have to find out. However, now there are no error codes showing but car still doesn't start.

Originally Posted by ajmat

Does the glow plug light come on and switch off?

Initially when the ignition is turned ON, there are no errors showing on the MID. After repeated attempts (2-3 tries) to starting the car, the 'Glow Plug' symbol starts to blink on the MID and a message 'Engine Fault' shows on the MID.

[ajmat]

I get the feeling it could be a weak battery causing the glow plugs not to work. However, when the battery dies, one normally gets error codes on ASR and ESP appearing. If possible, check with another battery or do a jump-start!

By process of elimination, if it is not the battery, I would address the glow plugs next. that requires only a multimeter to check

[Epic]

Originally Posted by ajmat

I get the feeling it could be a weak battery causing the glow plugs not to work. However, when the battery dies, one normally gets error codes on ASR and ESP appearing. If possible, check with another battery or do a jump-start!

Well it definitely isn't a weak battery as we had checked the battery the day we got the car back from the workshop post suspension overhaul. Even jump starting yielded no result. The car cranks perfectly but the engine struggles to keep idle and dies.

Originally Posted by ajmat

By process of elimination, if it is not the battery, I would address the glow plugs next. that requires only a multimeter to check

As mentioned in my earlier post, we have checked the battery, wiring, loose connections, glow plug and EGR valve and all are working fine. My mechanic is still checking components one after the other as we speak and ruling them out if found ok.

[Akshay1234]

Originally Posted by Epic

Well it definitely isn't a weak battery as we had checked the battery the day we got the car back from the workshop post suspension overhaul. Even jump starting yielded no result. The car cranks perfectly but the engine struggles to keep idle and dies.

Going by what you describe, its probably an injector which has gone bad. Do get the injectors checked out.

[Epic]

Originally Posted by Akshay1234

Going by what you describe, its probably an injector which has gone bad. Do get the injectors checked out.

So this is the fault code we are getting:



The weird part is that he says that all the injectors are fine and he suspects an internal fault in the ECM.

[Akshay1234]

Originally Posted by Epic

So this is the fault code we are getting:

Attachment 1781819

The weird part is that he says that all the injectors are fine and he suspects an internal fault in the ECM.

But if the fault code is saying injector, how can he blame the ECM? A friends Yeti had a similar problem, and one injector had to be changed.

[Gannu_1]

Circuit open points to some wire(s) cut off isn't it? Please have the technician get the wiring checked thoroughly.

Take it to a Skoda service center and let them have it diagnosed. You can get it serviced from the FNG.

[pramods]

Originally Posted by Epic

So this is the fault code we are getting:

The weird part is that he says that all the injectors are fine and he suspects an internal fault in the ECM.

Its highly likely that the wiring harness has gone bad, you may have to relook at the wiring all across for the fault. The ECM generally are very fault tolerant and are last thing to fail.

few indication, check for wiring cut, melting and few of the fuses before getting to ECM.


Got a reference for you : same error and it was indeed an wiring gone wrong
http://www.vwwatercooled.com.au/foru...-118152-2.html


-Pramod

[Epic]

Originally Posted by Akshay1234

But if the fault code is saying injector, how can he blame the ECM? A friends Yeti had a similar problem, and one injector had to be changed.

Yes correct. But he claims that he has checked the injectors and that they are working fine and hence suspecting an internal fault in the ECM.

Originally Posted by Gannu_1

Circuit open points to some wire(s) cut off isn't it? Please have the technician get the wiring checked thoroughly.

They have checked the wiring and all are intact.

Originally Posted by Gannu_1

Take it to a Skoda service center and let them have it diagnosed. You can get it serviced from the FNG.

We have given the car to Shirazi Auto at Borivali West. He is very good and caters to mostly German cars. He admits that this issue has stumped him too but he will find the problem.

We give the car to Skoda only for servicing. We have stopped giving it to Skoda for technical issues as they tend to blow things out or proportion - especially the bill!

Previously we had a cooling issue with the AC and Skoda diagnosed it with a faulty AC compressor which would cost us around 70k. Gave it to Gomes Auto at Santacruz and he just changed a switch with in the compressor and billed us 10k. AC working perfectly ever since.

The same happened with a busted wheel speed sensor, we were told that it will cost us around 4k for one sensor. When we told them that it seemed pretty steep, they all of a sudden had an 80% discount offer and changed all 04 sensors for around 4k. This was with the Autobahn dealer. We now give it to only JMD for service as we know the owner personally and bought our other cars from them.

[Epic]

So just got a call from my mechanic and he says that since all probabilities have been ruled out, they are now looking at the ECM; specifically the Injector Driver Control Module which is a circuit located in the ECM. They will also be checking all other circuits in the ECM to check if they are working as required.

I am keeping my fingers crossed first hoping that the exact issue is identified and also hoping it is a minor one.

[Epic]

Got a call from the mechanic today and he has informed me that they believe they have identified the problem. The ECM was opened and they found a blown IC - the one that controls the Injector Drive.

It was due to this blown IC that the Injector Drive was not getting proper voltage and hence the error of 'Fuel Injector / Supply Voltage - Circuit Open'. The cause could be moisture as per him but he said that it shouldn't have happened. Oddly, the ECM in Skodas are located below the wiper cowl which tend to collect water during monsoons. No water was found in the ECM though.

[csr9]

Originally Posted by Epic

It was due to this blown IC that the Injector Drive was not getting proper voltage and hence the error of 'Fuel Injector / Supply Voltage - Circuit Open'. The cause could be moisture as per him but he said that it shouldn't have....

Hi,

I am facing the same issue with similar signs Post (Skoda Laura: Problems & solutions thread). Attaching a VCDS scan as well The car is at the dealership, they are recommending to have the ECU replaced and say all other components are ok.

Is the issue is sorted?

Thank you