T8 with DTC P1681-00 and P2135-00
9-3 Model year 2003-2012 with B207 petrol engine and engine control unit T8
DTC codes
P1681 00 T8 internal fault
P2135 00 Faulty throttle position sensor
Step 1
Check the wiring harness between T8 and throttle position sensor
Step 2
Replace Throttle body
Step 3
Replace T8