2001 Chrysler Caravan P0456 Code: Vacuum Leak Fix and EVAP System Diagnosis
Hi everyone, I recently resolved a persistent P0456 check engine light issue on my 2001 Chrysler Caravan. After investigating with a local mechanic, we identified a cracked vacuum hose located underneath the air filter box in the engine compartment. The hose was approximately 2 inches long, black, and 5/8 inch in diameter with a slight bend—consistent with an elbow-style connector. The mechanic removed it and confirmed the leak was directly responsible for triggering the P0456 code (EVAP system vapor pressure regulation leak). After replacing the hose and resetting the system, I drove about 350 miles without any recurrence of the code. This suggests a successful repair. Total cost: $88 — $80 for labor (1 hour) + $3 for the new hose + tax. I recommend checking the engine compartment near the air filter housing for similar vacuum hoses, especially if you're experiencing a P0456 code on your 2001 Chrysler Caravan. This is one of the most common and fixable causes of that specific fault code. Thanks to Jeff for his helpful insights—though I didn’t need them directly, it was appreciated. Best regards, George
Just to clarify: I've helped many users with the same 2001 Chrysler Caravan and P0456 code over time, and while my experiences haven't been perfect, I'm not one of the mechanics who worked on your vehicle. I post here voluntarily because I enjoy helping others—my advice comes from hands-on experience fixing vehicles that other shops or technicians couldn’t resolve. Some users may be frustrated with repair costs, but many garages—including independent ones—actually call me daily for support. I’m not a dealership employee, and I earn one of the lowest wages in my shop despite being deeply involved in diagnostics. I don’t criticize other professionals or trades—I only expect mutual respect. Glad to hear your issue is resolved, George! It matches exactly where I expected the leak to be.