P1023
Powertrain Codes
P1023 - BMW - Valvetronic Adjustment Range
Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
Possible Causes
- Valvetronic eccentric shaft sensor circuit is open or shorted - Valvetronic eccentric shaft sensor poor electrical connection - Missing reluctor on valvetronic eccentric shaft sensor - Faulty valvetronic eccentric shaft sensor
When Detected
VVT self learning function faulty adjustment range bank 1