VW scirocco EPC issue
Discussion
Hi,
I have an 09 2.0 TSi DSG scirocco gt, it’s always driven absolutely fine, then this morning when i turned the car on it had an EPC light and a message on the dash saying “engine malfunction car needs workshop”, i turned the car off, and on again and it did the same again.
A few hours later i tried again and the car wouldn’t start, it was turning over but wouldn’t actually turn on, the EPC light was on and so was the oil light (however i have checked the oil only two weeks ago and it was fine). i then turned the car off, on again and this time it started perfectly fine.
Now a couple hours later again i have just started my car again and it has started perfectly fine, no lights.
Does anyone have any ideas? I don’t want to have to pay for a garage to look at it if it’s a simple issue or something which shouldn’t happen again.
Thanks in advance
Possibly something simple as coil packs or could be oil pump issues. Blocked oil pick up pipes cause lack of oil pressure to the head resulting in total loss of engine.
Chain tensioners have already been mentioned but you can check this out pretty easily. Chain stretch can also be picked up in Vagcom
Don't ask me how I know. Basically 2.0Tsi have s
t loads of issues. But once you have them running right, they are a peach.
Best bet is to get it plugged in. Also if you do get it on a ramp, drop the sump and check the pump.
Report back with the codes.
Chain tensioners have already been mentioned but you can check this out pretty easily. Chain stretch can also be picked up in Vagcom
Don't ask me how I know. Basically 2.0Tsi have s
t loads of issues. But once you have them running right, they are a peach. Best bet is to get it plugged in. Also if you do get it on a ramp, drop the sump and check the pump.
Report back with the codes.
MuddyK said:
Possibly something simple as coil packs or could be oil pump issues. Blocked oil pick up pipes cause lack of oil pressure to the head resulting in total loss of engine.
Chain tensioners have already been mentioned but you can check this out pretty easily. Chain stretch can also be picked up in Vagcom
Don't ask me how I know. Basically 2.0Tsi have st loads of issues. But once you have them running right, they are a peach.
Best bet is to get it plugged in. Also if you do get it on a ramp, drop the sump and check the pump.
Report back with the codes.
The oil pump idea you stated is making me think that could be quite likely to be honest as my car always has quite a rough and long auto choke every morning and every day when i finish work, could the faulty oil pump be what’s causing this? the only other thing i’ve noticed recently with the car is a noise which all i can think to describe is the sound as if it’s raining outside on the bonet, but it’s not raining, however the sound can’t be heard under the hood, not sure if this is related or not? please also see my reply below as i had no joy with the OBD reader as it showed no new codes Chain tensioners have already been mentioned but you can check this out pretty easily. Chain stretch can also be picked up in Vagcom
Don't ask me how I know. Basically 2.0Tsi have s
t loads of issues. But once you have them running right, they are a peach. Best bet is to get it plugged in. Also if you do get it on a ramp, drop the sump and check the pump.
Report back with the codes.
OP, I've had a similar issue with my identical spec Rocco.
Took me a while to track down the problem as there were no fault codes showing. Turns out that EPC is Electronic Power Control, which I believe typically refers to the fly by wire throttle system.
On my car I found that a good portion of the wiring harness between the throttle actuator and ECU had been replaced and re-routed for unknown reasons. Whoever carried out the work for whatever reason had left the new wiring to dangle behind and touching the rad fans where it had been worn through to the core on a couple of wires. Damaged wires were repaired and secured in a better position and this solved my problem.
Anyway, I have since read of occurrences of the throttle plates becoming jammed up with deposits, causing them to be unresponsive to the ECU's demands and hence an EPC light comes on.
Makes me wonder if this has happened to my car at some point, maybe letting some smoke out of the loom, necessitating the new wiring.
Took me a while to track down the problem as there were no fault codes showing. Turns out that EPC is Electronic Power Control, which I believe typically refers to the fly by wire throttle system.
On my car I found that a good portion of the wiring harness between the throttle actuator and ECU had been replaced and re-routed for unknown reasons. Whoever carried out the work for whatever reason had left the new wiring to dangle behind and touching the rad fans where it had been worn through to the core on a couple of wires. Damaged wires were repaired and secured in a better position and this solved my problem.
Anyway, I have since read of occurrences of the throttle plates becoming jammed up with deposits, causing them to be unresponsive to the ECU's demands and hence an EPC light comes on.
Makes me wonder if this has happened to my car at some point, maybe letting some smoke out of the loom, necessitating the new wiring.
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