How do I fix code P0037?

Question

Hi,

Im driving an Audi A5 2.0TFSI Quattro 2012 model. I had just change my turbo Cat to Eurocode HFC. Problem I have is the car not having stable idle when I brake to stop .My fuel consumption seem to be affect also. Use Vagcom and I have a fault code as below.

2858 - Oxygen (Lambda) Sensor B1 S2: Heating Circuit P0037 00 (032) - Short To Ground
Intermittent - Not Confirm - Tested Since

Freeze Frame :

Fault Status :00000001
Fault Priority : 2
Mileage : 76680
Date : 2015.06.13
Time : 10:23:29

Never had this problem before I change HF cat. Do pls advice

Answer 1

Hi there,

This code really doesn't have anything to do with the HF converter. Either the sensor heater wire is broken, shorted to ground or the wiring to the sensor is possibly pinched somewhere after you did the work.

Check and make sure the wiring is in good condition, if it is then replace the sensor.