evap system problem

I have a 2001 dodge grand caravan that the mil keeps coming on. I have had the code cleared 2 times and it comes back but not right away. The last time i had it erased the service man told me to put a new gas cap on it and I did but it came back on after about 3-4 weeks. I do not remember what the code was but it was the evap system i think it was a small leak. LET ME KNOW IF ANYONE KNOWS WHATS GOING ON MY WIFE IS GETTING MAD WITH THE MIL ON!!!!!!

I have a 2001 dodge grand caravan that the mil keeps coming on. I have had the code cleared 2 times and it comes back but not right away. The last time i had it erased the service man told me to put a new gas cap on it and I did but it came back on after about 3-4 weeks. I do not remember what the code was but it was the evap system i think it was a small leak. LET ME KNOW IF ANYONE KNOWS WHATS GOING ON MY WIFE IS GETTING MAD WITH THE MIL ON!!!!!!

Gotta have the error code number to pin it down any further.

There's two ways to get the code: >> (apply to a 2001?) Cycle your ignition switch from off to on (not start) three times leaving it on the third time. Watching the MIL light, count the sequence of flashes. A code 23 would be flash, flash, pause, flash, flash, flash. >> Second way is to go to Autozone or a similar business and have them download the codes with a scanner. They can tell you exactly what the codes mean and...it's FREE. Worst way is to go to a dealer and pay for it.

I read somewhere on this forum that the MIL light could come on if you have the gas cap off with the engine running. I hope the love of your life is refueling with the engine off.

I did the cycle of the key and the codes came up on the odometer and they were p0442 and p0445, so if anyone knows what they stand for please let me know!!! ther was one more after checking again p1684

I dont see P1684..other codes look like maybe a bad hose or leak detedtion pump.

SYMPTOM P0442 - EVAP LEAK MONITOR SMALL LEAK DETECTED

WHEN MONITORED
See DRB III

SET CONDITION
See DRB III.

POSSIBLE CAUSES

EVAP system hoses or wiring damaged
EVAP system component leaking
Leak detection pump leaking
EVAP leak monitor small or large does not reoccur

P0445 Evaporative Emission Control System Purge Control Valve Circuit Shorted

SYMPTOM P0455 - EVAP LEAK MONITOR LARGE LEAK DETECTED

TEST NOTE
This symptom is diagnosed using the test P0442 - EVAP LEAK MONITOR SMALL LEAK DETECTED.

WHEN MONITORED
See DRB III

SET CONDITION
See DRB III.

POSSIBLE CAUSES


EVAP system hoses or wiring damaged
EVAP system component leaking
Leak detection pump leaking
EVAP leak monitor small or large does not reoccur