P1450 on Lincoln
Fuel tank vacuum not bleeding off (Ford, Lincoln, Mazda)
Severity: Monitor
Most Ford and Mazda bulletins for P1450 describe only a check engine light, a slow fill or an inaccurate fuel gauge, so you can usually keep driving while you book a check.
It gets more serious if:
- Inspect soon: Get it checked soon if the engine is hard to start, will not start, runs rough or loses speed after refuelling. Ford found this with P1450 on some 2013–2014 Escape, Fusion and MKZ, and a purge valve stuck open on the 2012–2018 Focus 2.0L was recalled because tank vacuum could cause stalling.
This page covers only what differs on Lincoln. For what P1450 means, the ranked causes and the test order, see the P1450 guide.
What's different on Lincoln
LincolnYour car
2017 · MKC
Supported by vehicle dataSame service message as the 2017 Escape: check for liquid fuel when the purge valve is replaced. Bulletin status not verified.
2013–2020 · MKZ
Supported by vehicle dataShares the Fusion bulletins: refuelling hard start on 2013–2014, purge valve plus software on the hybrid. Bulletin status not verified.
SSM 46525Status unverified
MIL with P0455, P0456, P144C and/or P1450, rough idle or slow fill
2017escape, mkc · issued · NHTSA 10109013
When replacing the purge valve, check for liquid fuel in the vapour lines and canister.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 19-2207Status unverified
Hybrid/Energi: MIL with P1450, P0456, P0457, P04EE and/or P04EF
2013–2017c-max, fusion, mkz · issued · NHTSA 10162068
Update computer software and replace the canister purge valve.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
SSM 48301Status unverified
EVAP pinpoint test HX may give incorrect results
2013–2020c-max, fusion, mkz · issued · NHTSA 10168790
On hybrids, latch the fuel door and press the release before step HX22 so the dealer test reads correctly.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
16-0075Status unverified
Hard start, no start or loss of RPM after refuelling
2013–2014escape, fusion, mkz · issued · NHTSA 10183776
Some cars built on or before 11/9/2013 also show P1450 and/or P0456.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- MIL with P0455, P0456, P144C and/or P1450, rough idle or slow fill (bulletin SSM 46525)
- Hard start, no start or loss of RPM after refuelling (bulletin 16-0075)
- MIL with P1450, P0456, P0457, P04EE and/or P04EF (bulletin TSB 19-2207)
- EVAP pinpoint test HX may give incorrect results (bulletin SSM 48301)
- 1.0L EcoBoost: illuminated MIL with DTC P1450, built on or before 10/19/2015 (bulletin 16-0055)
- Slow fill and/or MIL with EVAP codes (bulletin TSB 21-2106)
- Incorrect fuel gauge indication with EVAP and catalyst codes (bulletin 15-0034)
- 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