Nissan Almera 2.2TD Fault Code P1251 P4-SPILL/V CIRC - Engine Won't Start

Model: nissan almera 2,2TD Fault Code: P1251 Posted: 2006-10-18 04:24

I own a 2000 Nissan Almera diesel model with a 2.2-liter 2,2TD engine. Suddenly, the vehicle stopped running without any warning signs. I am unable to start it — the engine turns over but does not ignite. Using the X431 diagnostic tool, I retrieved the following fault codes: - P1600 (P3) - Pump communication line issue - P1690 (P5) - Pump circuit/module fault - P1251 (P4) - SPILL/V CIRC (Fuel spill or vapor circulation) I cleared the fault memory, but the engine still will not start. Currently, only P125 or P4-SPILL/V CIRC is displayed. I am unsure what this code means and how critical it is. Can anyone provide insight into this issue? Is it a serious problem that requires immediate repair? Thank you for your help.