Hmm, Codes. A little help? B6 A4 1.8T

NYSpeed Automotive
1

Car won’t stay on. Start - high idle (1400 RPM). 5 seconds, and then it dies. No throttle response. Thinking, needs vacuum.

There’s no N75 valve, it’s on a MBC and the software is supposedly tuned to not care about it.

Ideas? Besides : I think you have a bad ground.

            Address 01: Engine       Labels: 06B-909-518-AMB.lbl

Control Module Part Number: 8E0 909 518 AK HW: 8E0 909 01ÿ ÿÿ
Component and/or Version: 1.8L R4/5VT G 0003
Software Coding: 0016711
Work Shop Code: WSC 00000 000 393216
VCID: 79F21DBF49B1
4 Faults Found:

17955 - Boost Pressure Regulation Valve (N75): Short to Ground
P1547 - 002 - Lower Limit Exceeded - MIL ON
17525 - Oxygen (Lambda) Sensor Heating Circuit: B1 S2: Short to Ground
P1117 - 002 - Lower Limit Exceeded - MIL ON
17881 - EVAP Leak Detection Pump: Open Circuit
P1473 - 004 - No Signal/Communication - MIL ON
17523 - Oxygen (Lambda) Sensor Heating: B1 S1: Short to Ground
P1115 - 002 - Lower Limit Exceeded

2

lol ohhh jesus

3

Really? Nothing?

I gotta figure out wtf is up with these O2 sensors. I guess the heating element died.

4

my m3 had something like this…

the 02 sensor wire melted and shorted itslef out… it caused the ECU to throw the car into limp mode…

I got under and the 02 sensor wire had completely melted and was just bare copper for 6-8 inches near my headers… i guess i had routed them wrong during the header install…

I replaced with new OEM headers and zipp tied them to the clip… reset the car adn Voila!!!

i think your car is in a limp mode

5

I would definitely check the wires for the O2 sensors, because in all honesty, it looks like a bad ground. :slight_smile: