P1004 BMW Causes
- Faulty Valvetronic eccentric shaft sensor
- Valvetronic eccentric shaft sensor wiring harness open or short-circuited
- Poor electrical connection in Valvetronic eccentric shaft sensor circuit
- Missing reluctor on Valvetronic eccentric shaft sensor
How is BMW P1004 Code Repaired?
Start by checking the “possible causes” listed above. Visually inspect the wiring harness and associated connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
When is the Code Detected?
Valvetronic eccentric shaft guiding sensor solenoid loss bank 1
Symptoms
Possible
Engine light on (or service engine soon warning light)
P1004 BMW Meaning
The Engine Control Module (ECM) monitors the Valvetronic eccentric shaft sensor. The ECM sets the OBDII code when the Valvetronic eccentric shaft sensor does not meet factory specifications.