Hello,

Im trying to fix the following fault code:

16514 - Oxygen (Lambda) Sensor B1 S1: Malfunction in Circuit

P0130 - 35-10 - - - Intermittent

car:

Golf 4 GTI 1.8T
Engine: AUM
ECU: 06A906032DR me7.5

N112 + N249 + N80 Connected with resistor.
Coded out the second lambda with ESKONF

I tried the following without succes.

1. First i fixed the wiring of the original harness because it was in pieces.
4 cables were cut and faulty, after soldering the wires back together i tested the wiring from the ECU to the 6-pin connector on the underside of the car.
All looked fine again.

This didnt fix the problem.

2. Replaced O2 Sensor with a new OEM one.

This didnt fix the problem.

3. Reflashed ECU with new file and original file.

Both files didnt fix the problem.

Could my ECU be fried?
I opened the ECU en checked the board for any damages but didnt find any.
Is there a way i can test the ECU if its faulty?

See picture for live data when car was running.

Hey, thank you for the reply.

I checked the wiring again but everything seems fine
From ECU to 6 pin o2 conncector
Should i measure it in ohms or how can i properly test these wires?
If so what should he the correct measurements

Kind regards.


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