Morning all. So my engine management light randomly turned on on a cold start having driven fine in the morning. 

 

OBD reader stated fast idle (it was normal and not on a regen) and also a unexpected fault in TCS. 

 

I've cleared the faults and ran the car for 20 mins and after a few turn off and on the fault did not return.

 

Left for an hour until cold and light reappeared but it is showing code P3215 now though. States there are no faults but engine still shows this code. States network error. 

 

Quick search shows that it just means the engine management light has been on.

 

Anyone got any ideas?

 

Regards

 

Matt

 

 

 

 

I don't believe there's a fault code so say the EML has been on previously, When there's a fault code, it tends to be either a current condition or a previous (intermitent) condition and once it's cleared, there should be no record of the code unless the condition reoccurs.

 

Still, I found this over on rosstechs forum which shares the same P3215 code:

Quote

012821 - Oxygen (Lambda) Sensor B3 S2; Heating Circuit 
               P3215 - 002 - Short to Ground

 

That suggests it could be a sensor issue but it's worth having a scan done with VCDS or similar to confirm the fault code first.

I thought it may be something like this. Thank you. I'll get it checked out. 

 

Regards

 

Matt