P1457 On Honda and Acura, the engine computer found a leak or fault in the EVAP canister side of the fuel vapor system

Honda/Acura EVAP canister system leak (EVAP control canister system)

Monitor

Honda bulletins for P1457 describe a lit check engine light from an EVAP canister system leak, and the owner complaints report no drivability problem, only the light and a failed emissions check.

Source: how we rate severity

P1457 in short

On Honda and Acura, P1457 means the computer found a leak in the EVAP canister side of the fuel vapor system. Honda bulletins and owner complaints point to the canister, its vent shut valve or the bypass solenoid. The car normally drives fine, but the check engine light stays on and emissions tests will fail.

The EVAP system traps fuel vapor in a charcoal canister and burns it later. Honda tests the system for leaks, and P1457 is the code for a leak or fault on the canister side, as opposed to P1456, which covers the fuel tank side.

Honda has issued bulletins on this code since the late 1990s, and they cover Accord, Civic, CR-V, Odyssey, S2000, Pilot, and Acura MDX, TL, RSX and CL. They describe EVAP function tests to find the leak, a slow-responding fuel vent module on 2001-2002 Civics, and an EVAP bypass solenoid failure on 2002-2003 models.

Owners on NHTSA report the dealer found the leak inside the canister and replaced the canister and its valve. Other owners report the same code on several Accords, and say it recurs in cold, salty climates, but that is an owner opinion and not a Honda statement.

Pick your make

P1457 is a manufacturer-specific code: its meaning depends on who built the car.

Other makes: meaning not verified. Check with a scan tool that reads manufacturer definitions.

Most likely causes

  1. EVAP canister or its vent shut valve leaking

    Supported by vehicle data
    Why it ranks here
    Honda bulletins 804 and 502 describe an EVAP leak at the canister, and an Accord owner reports a smoke test found the leak in the canister, with the canister and connected valve replaced.
    What would change this
    Rises if a smoke test or Honda EVAP function test points to the canister side. Falls if the canister holds pressure.
    How to test the evap charcoal canister

  2. EVAP bypass solenoid valve failure (2002-2003 models)

    Supported by vehicle data
    Why it ranks here
    Honda bulletin 03001 names an EVAP bypass solenoid valve failure with P1457 on the 2002 S2000 and 2003 CL, and an Acura owner reports the same meaning.
    What would change this
    Rises on a 2002-2003 S2000, CL or similar model when the solenoid fails a function test. Falls on earlier cars.

  3. Slow-responding fuel vent module (2001-2002 Civic)

    Supported by vehicle data
    Why it ranks here
    Honda bulletin 030802 covers P1457 from slow response of the fuel vent module on the 2001 and 2002 Civic. Only the summary was read.
    What would change this
    Rises on a 2001-2002 Civic. Falls on other models.

What to test first

Start at step 1. Each result tells you what it means and where to go next.

  1. Read all stored codes. Note whether P1456 is also stored.

    Low riskTool: OBD-II scan tool

    • IfP1456 is stored with P1457

      It meansHonda bulletins treat the two together, so the EVAP leak test covers both sides of the system.

      Go to step 2

    • IfP1457 is the only EVAP code

      It meansThe leak is on the canister side.

      Go to step 2

  2. Have a Honda dealer or a shop with the Honda tester run the EVAP system function test and a smoke test of the canister side.

    Best left to a shopTool: Honda tester, smoke machine

    Warning:Smoke and pressure testing is done on a fuel vapor system near gasoline; the work should be done by a shop away from sparks and open flame.

Symptoms

  • Check engine light on with no change in how the car drives
  • Failed emissions inspection

How to fix

Parts and cost context

  • EVAP charcoal canister:Owner reports describe replacing the canister together with its valve. Labour varies; get a quote.

Labor varies by vehicle and shop; get a quote before you approve a repair.

Compare used part prices on PartPriceGuide

On your vehicle

Honda

  • 1998–2000 · Accord

    Supported by vehicle data

    Honda bulletin 01011 covers P1457 with an EVAP leak on 1998-1999 Accords, and Accord owners on NHTSA report the code on 1998-2000 cars.

  • 2001–2002 · Civic

    Supported by vehicle data

    Honda bulletin 030802 ties P1457 to a slow fuel vent module on the 2001-2002 Civic.

  • 2002 · S2000

    Supported by vehicle data

    Honda bulletin 03001 names the EVAP bypass solenoid valve for P1457.

  • SB-99-075Status unverified

    Troubleshooting DTC P1456 and P1457

    1996–2006odyssey, s2000, civic, cr-v, accord, pilot · NHTSA 10053545

    Dealers run the EVAP function test to find the leak so it can be repaired.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 01011Status unverified

    MIL on with DTC P1457, leak detected in EVAP control system

    1998–1999accord · NHTSA 619956

    Service bulletin for an Accord with the check engine light on and P1457 set. Only the summary was read.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 030802Status unverified

    MIL on with DTC P1457, slow response of fuel vent module

    2001–2002civic · NHTSA 630799

    Information on a 2001-2002 Civic where P1457 is set because the fuel vent module responds slowly.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 03001Status unverified

    MIL on with P1457, EVAP bypass solenoid valve failure

    2002s2000 · NHTSA 10000993

    Names the EVAP bypass solenoid valve as the failure behind P1457 on the 2002 S2000.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

Acura

  • 03001 (acura)Status unverified

    MIL on with P1457, EVAP bypass solenoid valve failure

    2003cl · NHTSA 10000991

    Same bulletin number for the 2003 CL: names the EVAP bypass solenoid valve for P1457.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • 502Status unverified

    Troubleshooting P1457, EVAP leak at canister

    2001mdx · NHTSA 638022

    Troubleshooting guide for an EVAP leak at the canister on the 2001 MDX. Only the summary was read.

    We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.

  • P1456Honda: leak found in the EVAP control system on the fuel tank side

    Same system Supported by vehicle data

    Honda bulletins on P1456 and P1457 are written together: P1456 is the fuel tank side of the EVAP leak check and P1457 the canister side.

All EVAP (evaporative emissions) codes

P1457 questions

What is the difference between P1456 and P1457 on a Honda?

Honda bulletin B99-040 names P1456 as EVAP leakage on the fuel tank system and P1457 as leakage on the EVAP canister system.

Sources and review

  1. Honda and Acura service bulletins naming DTC P1457 (EVAP canister system leak) — American Honda Motor Co. / NHTSA
  2. NHTSA complaint ODI 10132606: 2000 Honda Accord, P1457 — NHTSA Office of Defects Investigation (owner complaint)
  3. NHTSA complaint ODI 10315726: 1998 Honda Accord, P1456/P1457 — NHTSA Office of Defects Investigation (owner complaint)
  4. NHTSA complaint ODI 10197371: 2002 Acura (model not given), P1457 — NHTSA Office of Defects Investigation (owner complaint)
  5. P1457 trouble code definition by make — troublecodes.net
Last reviewed
Written by
Saurabh K.
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