P1456 on Honda
Honda: leak found in the EVAP control system on the fuel tank side
Severity: Monitor
Honda bulletins for this code describe a lit check engine light caused by a loose, binding or wrong fuel cap or an EVAP leak, with no drivability complaint.
This page covers only what differs on Honda. For what P1456 means, the ranked causes and the test order, see the P1456 guide.
What's different on Honda
HondaYour car
1996–2006 · Accord
Supported by vehicle dataHonda bulletin SB-99-075 prescribes an EVAP function test for P1456 and P1457, and owner complaints on 1998 Accords report both codes.
2002–2004 · CR-V
Supported by vehicle dataHonda bulletin 04-002 says a binding fuel fill cap can set P1456 on the CR-V, Insight and S2000.
SB-99-075Status unverified
Troubleshooting DTC P1456 and P1457
1996–2006odyssey, s2000, insight, cr-v, civic, 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.
04-002Status unverified
Fuel fill cap binds, MIL with P1456
2002–2004cr-v, insight, s2000 · NHTSA 10011094
Fuel cap binding can set the MIL with P1456.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
010402Status unverified
Testing for internal leaks with P1456 or P1457
1998–2002s2000, accord, civic, cr-v, insight, odyssey, prelude · NHTSA 636753
Information on internal leak testing.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- Honda and Acura service bulletins on DTC P1456 (EVAP control system leakage, fuel tank system)
- NHTSA complaint ODI 768976: 1998 Honda Accord, P1456 and P1457
- Last reviewed
- Written by
- Saurabh K.
- Editorial review
- Pending
- Technician review
- Technician review pending
This page explains what a code usually means; it is not a substitute for a professional inspection. How we source and review · Report an error