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Engine Management Light

Engine Management Light

Dinho
Member
232
26-07-2020, 04:42 AM
#1
The other day my engine management light came on, I had a panic and checked my engine bay. Noticed I was fully out of coolant which I have now replaced.
I bought a diagnostic cable from ebay apparently its a vag com type. I wan't to know has anyone themselves done a self diagnosis on why their engine management light has come on?
If not how much will it cost for a diagnosis.

Thanks if anyone can help
Dinho
26-07-2020, 04:42 AM #1

The other day my engine management light came on, I had a panic and checked my engine bay. Noticed I was fully out of coolant which I have now replaced.
I bought a diagnostic cable from ebay apparently its a vag com type. I wan't to know has anyone themselves done a self diagnosis on why their engine management light has come on?
If not how much will it cost for a diagnosis.

Thanks if anyone can help

ZAIS200
Senior Member
741
26-07-2020, 05:03 AM
#2
Does your VAG com cable use the OBD2 (OBDII) interface?
If the answer is yes then you should be able to use it on an Lexus IS, I use a bluetooth connection with OBDII interface with my IS and connect via bluettoth to my Android phone with both the Torque app and the Dashcommand app and both work flawlessly
ZAIS200
26-07-2020, 05:03 AM #2

Does your VAG com cable use the OBD2 (OBDII) interface?
If the answer is yes then you should be able to use it on an Lexus IS, I use a bluetooth connection with OBDII interface with my IS and connect via bluettoth to my Android phone with both the Torque app and the Dashcommand app and both work flawlessly

is300_dino
Posting Freak
3,556
26-07-2020, 05:15 AM
#3
when you say you brought a cable, did it come with a device? you'll need the actual code reader to get the codes, i can suggest a scangauge unit they work well. they plug into the obd2 port and then brings up any live code or stored code numbers, they are so easy to use and definately worth the money.
some garages will run a diog for free where as others try and charge. Lexus tried charging me £75 to run diogs last time i went in, where they would do it for free before. even though i just wanted them to double check i was getting the right codes.
one on ebay £60 no bids
http://www.ebay.co.uk/itm/Scangauge-2-Ob...140wt_1170

jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place
is300_dino
26-07-2020, 05:15 AM #3

when you say you brought a cable, did it come with a device? you'll need the actual code reader to get the codes, i can suggest a scangauge unit they work well. they plug into the obd2 port and then brings up any live code or stored code numbers, they are so easy to use and definately worth the money.
some garages will run a diog for free where as others try and charge. Lexus tried charging me £75 to run diogs last time i went in, where they would do it for free before. even though i just wanted them to double check i was getting the right codes.
one on ebay £60 no bids
http://www.ebay.co.uk/itm/Scangauge-2-Ob...140wt_1170


jae 2010 best lexus category show and shine winner
jae 2010 ice outlaw award 2nd place
jae 2011 ice outlaw award 1st place

danny1377
Member
60
26-07-2020, 07:20 AM
#4
This is odd I had the same thing happen to me today my engine was out of coolant too please let me know what the answer is as I know ****** all about engine's .
danny1377
26-07-2020, 07:20 AM #4

This is odd I had the same thing happen to me today my engine was out of coolant too please let me know what the answer is as I know ****** all about engine's .

Phil01
Posting Freak
2,004
29-07-2020, 12:32 PM
#5
scan gauge Dino?

1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,
Phil01
29-07-2020, 12:32 PM #5

scan gauge Dino?


1990 Eunos Roadster in Mariner DU blue
Cobalt cat back, Decat pipe, 15in Red Rota GT3 alloys, Toyo tyres, Lowered on Coil overs, Red anti roll bars, 14degree timing mod, white dash kit, illuminated side marker lights,
Halo ring headlights, OEM windblocker, Bluetooth streaming HU, Blue leather handbrake and gear lever gaitor, Centre brake/tail light mod, Blue velour door cards, Polished cam cover, Polished front strut bar, 4xheadrest speakers, JDM floor mats, Suede semi dish steering wheel,

Rolex
Senior Member
512
29-07-2020, 04:16 PM
#6
If you where out of coolant I would seriously recommend a Head Gasket Test.
Rolex
29-07-2020, 04:16 PM #6

If you where out of coolant I would seriously recommend a Head Gasket Test.

Dinho
Member
232
30-07-2020, 12:35 AM
#7
Thanks for the replies, I managed to get the fault code which is P0420, when I looked it up one of the probable causes is that 'The engine coolant temperature sensor is not working properly' which leads me to believe it could be the lack of coolant which triggered it.
But others have said I need a new cat converter £100 brand new? How much would the cost to fit approx
Dinho
30-07-2020, 12:35 AM #7

Thanks for the replies, I managed to get the fault code which is P0420, when I looked it up one of the probable causes is that 'The engine coolant temperature sensor is not working properly' which leads me to believe it could be the lack of coolant which triggered it.
But others have said I need a new cat converter £100 brand new? How much would the cost to fit approx

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