VW POLO 2004 - multiple engine fault codes

Hi all, would appreciate a bit of help with possible cause of the following intermidiate faults. I think it must be a common wiring fault for most as it can be cleared and the will return, as it says, intermediatly.

Can anyone suggest where to look?

here ais the scan for the engine module

Wednesday,04,March,2020,17:07:22:48506
VCDS -- Windows Based VAG/VAS Emulator Running on Windows 8 x64
VCDS Version: 19.6.2.2 (x64)
Data version: 20200210 DS308.0
www.Ross-Tech.com


VIN: WVWZZZ9NZ4Y152732 License Plate: MA04 AGX
Mileage: 215260km-133756mi Repair Order:



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Chassis Type: 9N (9N - VW Polo (2002 > 2010))
Scan: 01 02 03 08 09 15 17 19 25 37 44 45 46 56 76

VIN: WVWZZZ9NZ4Y152732 Mileage: 215260km-133756miles
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Address 01: Engine Labels: Redir Fail!
Part No: 03D 906 032 C
Component: 1,2l/2V SIMOS3 00HS2501
Coding: 00031
Shop #: WSC 00788
VCID: 1E3392D19A0AAFBFB7-5140
WVWZZZ9NZ4Y152732 VWZ7Z0C8280362

7 Faults Found:
16556 - Fuel Trim; Bank 1
P0172 - 35-10 - System Too Rich - Intermittent
16500 - Engine Coolant Temp. Sensor (G62)
P0116 - 35-00 - Implausible Signal
17950 - Angle Sensor 1 for Throttle Actuator (G187)
P1542 - 35-10 - Implausible Signal - Intermittent
17579 - Angle Sensor 2 for Throttle Actuator (G188) Implausible Signal
P1171 - 35-10 - - Intermittent
16514 - Oxygen (Lambda) Sensor B1 S1
P0130 - 35-10 - Malfunction in Circuit - Intermittent
17950 - Angle Sensor 1 for Throttle Actuator (G187)
P1542 - 35-10 - Implausible Signal - Intermittent
17564 - Manifold Pressure Sensor (G71)
P1156 - 35-10 - Open/Short to Ground - Intermittent


Thanks.

Hi, if you have a circuit diagram, please check whether the components use a common ground. At the same time the power supply.

I agree with ai ingo, a good chance that if you fix just one of those faults then the others will disappear as if by magic !!

Hi, Thanks was my assessment and hoping its that simple. I was rather hoping someone might have the circuit guidance or even a circuit diagram to point to common ground or loom issues. Does anyone have a wiring/circuit diagram for a VW polo 1.2 petrol??

Hi,

I had a similar issue on an a1. I believe all these sensors run off the same power supply. You will have to look in the ecu wiring diagrams where they connect, there will be 3 or 4 pins which group these sensors. Check all of them, they should be 5 volts and proceed from there.