Can anyone tell me if they have seen a P1457 ODB II code and if so what is it?

 

It's a Evap system leak on the canister side. Possibly a stuck/bad vent shut valve. I'd reccomend seeing a dealer for more diagnosis.

There are many causes for this DTC. The troubleshooting must be performed accurately for a complete diagnosis.

 

is this a common problem on the s2k? i got the same code and will be seeing the dealer about it soon...

 

No, it's not that common.

 

PROBABLE CAUSE
The EVAP bypass solenoid valve can fail due to
corrosion. The solenoid valve may get water inside. If
the water contains road salt, the solenoid windings
could corrode, causing the valve to fail. In a few rare
instances, the corrosion could be severe enough to
cause an internal short in the solenoid valve, which
could damage the ECM/PCM. If this happens, both the
bypass solenoid valve and the ECM/PCM would need
to be replaced.
Vehicles driven in the Northeastern part of the U.S. are
more likely to have this problem because of the salting
of roads during the winter months. Vehicles driven
where salt is not used on the roads are much less likely
to have this problem.

 

There are other causes ( damaged hoses, leaking o-rings) besides a corroded Bypass solenoid, A new one may not fix the problem.

 

I had this one too! They had to replace a valve. Happened pretty much the day after I drove the car off the lot.

- Chris