P1457 on Honda
Evaporative Emission Control System Leak Detected (Canister System)
P1457 on Honda vehicles indicates evaporative emission control system leak detected (canister system). Au7o has documented this code across 1 Honda model — most commonly on Accord. The companion code to P1456: the ECM's EVAP leak test isolated the leak to the charcoal canister side of the system, downstream of the vent shut valve. Honda commonly traces this to the canister vent shut valve or the two-way bypass solenoid. Typical repair costs on Honda range from $25 to $400, depending on the specific model and root cause.
Common Causes of P1457
- •Failed EVAP canister vent shut valve
- •Failed bypass solenoid valve or its vacuum lines
- •Cracked or rodent-chewed canister hoses
- •Saturated or cracked charcoal canister
- •Failed fuel tank pressure sensor reading
P1457 on Honda by Model
Honda Accord(1 issue)
- P0442 — Small EVAP Leak from Degraded Fuel Cap Seal or Failing Purge Valve2003-2017
On the Honda Accord, P0442 (small EVAP leak) is one of the most common check-engine triggers and almost always traces to one of three components in order of likelihood: the fuel cap, the engine-bay canister purge valve, or the under-car canister vent solenoid. The gas cap's rubber O-ring hardens, cracks, and stops sealing with age (aftermarket caps are a frequent repeat offender on this model). When the cap is good, the electric canister purge valve (which sticks or leaks internally) and the vent solenoid are the next suspects. A common Honda giveaway is a P1457 or P0451/P0456 stored alongside P0442, which points to the canister vent-side hardware rather than the cap. Because the leak is small, it is often intermittent and may set after refueling.
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View P1457 across all makes →Frequently Asked Questions
What does P1457 mean on Honda?▼
P1457 stands for "Evaporative Emission Control System Leak Detected (Canister System)." The companion code to P1456: the ECM's EVAP leak test isolated the leak to the charcoal canister side of the system, downstream of the vent shut valve. Honda commonly traces this to the canister vent shut valve or the two-way bypass solenoid. On Honda specifically, this code is documented across 1 model.
What causes P1457 on Honda vehicles?▼
Common causes on Honda: Failed EVAP canister vent shut valve, Failed bypass solenoid valve or its vacuum lines, Cracked or rodent-chewed canister hoses, Saturated or cracked charcoal canister, Failed fuel tank pressure sensor reading. Specific causes vary by model and year — see the per-model sections below.
How much does it cost to fix P1457 on a Honda?▼
Repair costs on Honda range from $25 to $400, depending on the specific model and root cause.
Which Honda models have P1457 documented?▼
Au7o has documented P1457 on 1 Honda model: Accord.