Bank 1 fuel trims not displaying

IslanderAdam

Regular Member
Joined
Jun 23, 2024
Points
13
Having an odd issue. Been trying to diagnose lean fuel trim codes using the torque app. Both banks were displaying trims in the app, now I'm not getting any information from bank 1. Just before this happened, I forgot the car was in gear and stalled it out releasing the clutch. Could I have jarred something loose?
I did find some minor vaccum leaks, the remaining bank I can see is low on hot idle and increases at higher rpm so I'm thinking fuel filter or soft failing pump for my codes anyway. also getting very low voltage readings from downstream 02 sensor on bank 1. Could this be an ecu issue or just a bad sensor?
 

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NZ00Z3

Zorg Guru (IV)
Supporter
New Zealand Zeds
Joined
Dec 9, 2014
Points
158
Location
Timaru, New Zealand
Model of Z
3.0L, 2.8L, 2.0L Z3 Roadsters
Check the fuel system status of bank 1 at hot idle. It should be 2 Closed Loop. If it is 8 system fault, then the pre-cat O2 sensor is faulty
 
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