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Ford P0456

ability concerns such as hesitation, rough idle, or loss of

DriveUnknown. The supplied verified evidence does not establish whether the vehicle is safe to drive with P0456.
ChargeUnknown. The supplied verified evidence does not establish whether charging is affected or safe with P0456.
ServiceContact a qualified Ford service provider for diagnosis, particularly if hesitation, rough idle, loss of power, or additional DTCs are present.
Confidence95%

Quick answer

For applicable 2012–2018 Ford Focus vehicles in the US, Ford service communication 24N07 includes DTC P0456 among the codes to check. The supplied evidence does not establish the exact fault definition, severity, drivability status, charging status, cause, or repair for P0456.

This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.

Video guides

Watch Videos

Relevant videos play here without leaving this diagnostic page.

Causes and Fixes Ford P0456 Code: Evaporative Emissions System Small Leak DetectedHVAC Mechanic
Ford P0456 Evaporative Emission System Leak FixesCar_Fix_DTC

Videos are supporting material and never override OEM or regulator evidence.

1. What does P0456 mean?

For applicable 2012–2018 Ford Focus vehicles in the US, Ford service communication 24N07 includes DTC P0456 among the codes to check. The supplied evidence does not establish the exact fault definition, severity, drivability status, charging status, cause, or repair for P0456.

2. Technical explanation

The verified NHTSA-hosted Ford manufacturer communication 24N07 instructs service personnel to check for P0456 along with P0171, P0172, P0420, P1450, P0443, P0460, P0507, P144A, P2195, and P2196. The same evidence references customer drivability concerns including hesitation, rough idle, or loss of power, but it does not establish that P0456 alone causes any of those concerns.

3. What system is affected?

Not yet established by verified evidence.

4. How serious is this code?

Unknown. The supplied verified evidence does not assign a severity level.

5. Symptoms you may notice

  • A Ford service communication references customer complaints of hesitation, rough idle, or loss of power in the context of checking several DTCs, including P0456. It does not establish these as symptoms caused by P0456 alone.

6. Possible causes

  • Not yet established by verified evidence.

7. Can I still drive the vehicle?

Unknown. The supplied verified evidence does not establish whether the vehicle is safe to drive with P0456.

8. Can I charge the vehicle?

Unknown. The supplied verified evidence does not establish whether charging is affected or safe with P0456.

9. What you can safely do

  • Have the vehicle evaluated by a qualified Ford service provider if P0456 is present or if drivability concerns occur.
  • Provide the technician with any associated DTCs and observed vehicle behavior.

10. Step-by-step troubleshooting

  1. Ford communication 24N07 instructs service personnel to check for DTC P0456 along with P0171, P0172, P0420, P1450, P0443, P0460, P0507, P144A, P2195, and P2196.
  2. Further diagnostic steps are not established by the supplied verified evidence.

11. When to contact service

Contact a qualified Ford service provider for diagnosis, particularly if hesitation, rough idle, loss of power, or additional DTCs are present.

12. What the service center may check

  • Check for P0456 and the other DTCs listed in Ford communication 24N07: P0171, P0172, P0420, P1450, P0443, P0460, P0507, P144A, P2195, and P2196.

13. Possible repair or resolution

  • Not yet established by verified evidence.

14. Affected vehicles

15. Related TSBs / service bulletins

  • Ford manufacturer communication 24N07, published December 4, 2024, is available through NHTSA as Manufacturer Communication PDF 11012235: https://static.nhtsa.gov/odi/tsbs/2025/MC-11012235-0001.pdf
  • The supplied excerpt identifies P0456 as one of several DTCs to check. It does not provide a verified repair resolution in the supplied evidence.

16. Recall information

  • Not yet established by verified evidence.

17. Official manufacturer information

Verified source: NHTSA-hosted Ford Manufacturer Communication 24N07 (PDF 11012235), published December 4, 2024: https://static.nhtsa.gov/odi/tsbs/2025/MC-11012235-0001.pdf. Verified applicability supplied: 2012–2018 Ford Focus, US.

19. Frequently asked questions

What does P0456 mean on an applicable Ford Focus?

The supplied verified evidence does not establish an exact definition for P0456. It only establishes that Ford communication 24N07 includes P0456 among DTCs to check.

Can P0456 cause hesitation, rough idle, or loss of power?

Not established for P0456 alone. Ford communication 24N07 references those complaints while listing multiple DTCs, including P0456.

Which Ford Focus vehicles are covered by the supplied applicability data?

2012–2018 Ford Focus vehicles in the US.

20. Sources & verification

ReferenceVerified
Ford P0456: ability concerns such as hesitation, rough idle, or loss of | EV Diagnostics