2001 8L S3 new to vagcom

[Speedy Steve]

Ok ive only got the cheap version at the mo funds are tight but after trying out the cheap one i will be buying the full one soon. Anyway did a scan and this came up been having low boost problems.

Address 01: Engine

controller: 8N0 906 018J
component; 1.8l R4/5VT 0003
Coding; 10710
Shop#; WSC 78903
WAUZZZ8LZ11001135 AUZ7Z0A1825229
1 Fault found
17536 - Fuel trim; Bank 1 (multi); System to lean
P1128-35-00--
Readiness; 0000 0000
----------------------------------------------
Address 03; ABS brakes
controller; 8N0 907 379 E
component: ESP 20 CAN V0005
Coding: 18448
Shop# WSC 01236
2 faults found
01423 - Lateral acceleration sensor (G200)
57-10 Electrical circuit failure - Intermitant



So i know the traction control sensor needs replacing but the system lean? should i be worried what is it thats broken????


Help please

 

[bearthebruce]

Take a look at the Ross-Tech wiki :http://wiki.ross-tech.com/index.php/17536/P1128/004392

Also, take a read of the Fuel Trim page on Ross-Tech's site: http://www.ross-tech.com/vag-com/cars/fuel-trim.html

 

[Speedy Steve]

Thanks still a little confussed but im sure after i read it a few times ill get it.

 

[bearthebruce]

There are a number of things that can cause the lean fuel trim error. You have to start looking for them. If the trim is lean, often there is an air leak into the system somewhere. Or, there could be something going on in the exhaust system that is causing the ECU to set a lean condition. It could be a bad sensor although you would normally see an error code for that sensor.

By giving you the information about how the car calculates fuel trim, I was hoping to help you narrow down the possibilities. Sorry the information is not helpful.

 

[Speedy Steve]

Its helpful i was just thinking it would be a straight answer so guess i still have to dig deeper