2015 Dodge P0456: What It Means & Is It Safe to Drive?
P0456 on the 2015 Dodge: Evaporative Emission System Leak Detected (Very Small Leak). Here's what it means, what usually causes it, what repairs typically cost, and whether it's safe to keep driving.
What this code means
The EVAP system has detected a very small leak—often smaller than P0442. Commonly caused by a loose fuel cap or hairline crack in a hose.
Common causes on the 2015 Dodge
- Loose or worn gas cap seal
- Hairline crack in EVAP hoses
- Minor leak at purge or vent valve fittings
Symptoms
- Check Engine Light only
- Usually no noticeable driving symptoms
Typical fixes
- Inspect and replace gas cap if seal is hardened or cracked
- Smoke-test EVAP system to locate tiny leaks
- Repair or replace leaking hoses and fittings
Repair cost range
For a 2015 Dodge, repairs for P0456 typically fall between $25 and $350, depending on the root cause and labor rates in your area.
Known issues on Dodge
Dodge P0456 on Charger and Challenger often comes from the fuel filler neck grommet or gas cap. On Grand Caravan, the canister vent hose under the vehicle can crack from age and temperature cycling. Replace the gas cap first; if the code returns, smoke test the filler neck and canister hoses.
Most commonly affected models