P1450 on Ford
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 Ford. For what P1450 means, the ranked causes and the test order, see the P1450 guide.
What's different on Ford
FordYour car
2012–2017 · Focus
Supported by vehicle dataThree different P1450 bulletins: a computer reprogram for the 2015–2016 1.0L EcoBoost, a sticking purge valve on the 2016–2017 Focus RS, and a fuel gauge concern on 2012–2014 models. 2012–2018 Focus 2.0L also had purge valve recall 18V-735. Bulletin status not verified.
Related recall campaigns: 18V-735
2017 · Mustang
Supported by vehicle data2.3L built on or before 13-Jan-2017: bulletin for P0456, P1450 and P144C. Bulletin status not verified.
2013–2017 · Escape
Supported by vehicle data2013 models built on or before 11/9/2013 can be hard to start after refuelling with P1450; 2017 models may have liquid fuel in the EVAP vapour lines. Bulletin status not verified.
2013–2020 · Fusion
Supported by vehicle data2013–2014 cars can be hard to start after refuelling; hybrids and Energi get new purge valve plus software, and the dealer test needs the fuel door step. Bulletin status not verified.
2013–2018 · C-Max
Supported by vehicle dataHybrid and Energi: purge valve sealing fixed with new valve and software. Bulletin status not verified.
2017–2021 · Transit
Supported by vehicle dataBuilt on or before 30-Nov-2020: a kinked fresh-air vent line causes slow filling and EVAP codes; the fix is a zip tie. Bulletin status not verified.
16-0055Status unverified
1.0L EcoBoost: MIL with DTC P1450, built on or before 10/19/2015
2015–2016focus · issued · NHTSA 10075285
Defines P1450 as unable to bleed up fuel tank vacuum and fixes it with a computer reprogram.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 17-0016Status unverified
Focus RS 2.3L: MIL with P0456, P1450 and/or P144A
2016–2017focus · issued · NHTSA 10095617
Points to an intermittently sticking canister purge valve.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
TSB 17-0019Status unverified
Mustang 2.3L: MIL with P0456, P1450 and/or P144C
2017mustang · issued · NHTSA 10095621
Service procedure for 2017 Mustang 2.3L built on or before 13-Jan-2017; the summary does not name the part.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
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.
TSB 21-2106Status unverified
Slow fill and/or MIL with EVAP codes
2017–2021transit · issued · NHTSA 10191172
Kinked fresh-air vent line; attach a zip tie to hold it open.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
15-0034Status unverified
Incorrect fuel gauge with EVAP and catalyst codes
2012–2014focus · issued · NHTSA 10057878
Fuel gauge concern on the Focus with P1450 among the listed codes.
We couldn't confirm whether this bulletin is still current, so it doesn't count as confirmation.
Sources and review
- 1.0L EcoBoost: illuminated MIL with DTC P1450, built on or before 10/19/2015 (bulletin 16-0055)
- MIL with DTCs P0456, P1450 and/or P144A (bulletin TSB 17-0016)
- Incorrect fuel gauge indication with EVAP and catalyst codes (bulletin 15-0034)
- Part 573 Safety Recall Report 18V-735: canister purge valve (2012–2018 Ford Focus 2.0L)
- MIL with DTCs P0456, P1450 and/or P144C (bulletin TSB 17-0019)
- Hard start, no start or loss of RPM after refuelling (bulletin 16-0075)
- MIL with P0455, P0456, P144C and/or P1450, rough idle or slow fill (bulletin SSM 46525)
- MIL with P1450, P0456, P0457, P04EE and/or P04EF (bulletin TSB 19-2207)
- EVAP pinpoint test HX may give incorrect results (bulletin SSM 48301)
- Slow fill and/or MIL with EVAP codes (bulletin TSB 21-2106)
- 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