Hello,

I have a problem with my Audi S4 B6. For some time now, a check engine indicator related to the P17536 (Fuel Trim; Bank 1 (Mult): System too Lean) error appears to me. Sometimes the error P17538 also occurs with it. Fuel corrections under load go up quickly to around 10% to 15% even after reset. Idle adjustments are good - close to 0%.

I suspect that the fuel pump is not giving the right pressure because the injection times are increasing to 20ms under load. Am I right? Please rate the logs.

Static logs:
Groups 002+033: https://log.tunezilla.com/s/AKe6hp6Y
Groups 003+033: https://log.tunezilla.com/s/XszIIikq

Dynamic logs:
Groups 002+033 - run 1: https://log.tunezilla.com/s/cOJaOB3c
Groups 002+033 - run 2: https://log.tunezilla.com/s/HOJmXcJy
Groups 002+033 - run 3: https://log.tunezilla.com/s/8upWieZX


 

No it is stock. Only SAI is deleted from ECU.