P1021 Possible Causes
- Engine oil control valve circuit open or shorted
- Engine oil control valve electrical connection poor
- Faulty engine oil control valve
How is P1021 Code Repaired?
Begin by checking the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector pins.
Possible Symptoms
Engine light on (or service engine soon warning light)
P1021 Meaning
Engine oil control valve circuit, bank 1 is the generic description for code P1021, but the manufacturer may have a different description for your vehicle model and year. Currently, we don’t have more information about OBDII code P1021.