Nissan P0456
2011. MODEL NOT LISTED. *PE
Quick answer
For a 2011 Nissan LEAF, verified evidence does not establish a cause, symptom, driving/charging status, or repair for DTC P0456. One Nissan bulletin specifically states that its P0456 EVAP vent-control-valve O-ring guidance does not apply to LEAF vehicles.
This page separates verified manufacturer/regulator evidence from supporting material. Unsupported causes, repairs or safety conclusions are not guessed.
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1. What does P0456 mean?
For a 2011 Nissan LEAF, verified evidence does not establish a cause, symptom, driving/charging status, or repair for DTC P0456. One Nissan bulletin specifically states that its P0456 EVAP vent-control-valve O-ring guidance does not apply to LEAF vehicles.
2. Technical explanation
The supplied record identifies DTC P0456 for Nissan and lists 2011-2019 Nissan LEAF US applicability, with separate 2011 LEAF applicability. However, the verified source material does not provide a LEAF-specific technical definition or diagnostic procedure for this code. The canonical title/meaning in the supplied record is "2011. MODEL NOT LISTED. *PE," which does not establish a usable technical meaning for the LEAF.
3. What system is affected?
Not yet established by verified evidence for the Nissan LEAF.
4. How serious is this code?
Unknown. The supplied diagnostic record lists severity as unknown.
5. Symptoms you may notice
- Not yet established by verified evidence.
6. Possible causes
- Not yet established by verified evidence for the Nissan LEAF.
- Nissan bulletin NTB17-082b identifies an EVAP leak at a vent control valve O-ring as a cause of P0456 for covered vehicles, but explicitly states that it does not apply to LEAF vehicles.
- Nissan bulletin NTB-09-020-F states that a loose fuel fill cap can cause EVAP leak DTCs including P0456 on some 2007-2011 vehicles, but the supplied evidence does not list the affected model and does not establish applicability to the LEAF.
7. Can I still drive the vehicle?
Unknown. The supplied diagnostic record lists safe-to-drive status as unknown.
8. Can I charge the vehicle?
Unknown. The supplied diagnostic record lists safe-to-charge status as unknown.
9. What you can safely do
- Arrange professional diagnosis using vehicle-specific service information.
- Do not assume that EVAP-related repair guidance from non-LEAF Nissan vehicles applies to a LEAF.
- Do not perform high-voltage system repairs based on this code record.
10. Step-by-step troubleshooting
- Not yet established by verified evidence. No LEAF-specific troubleshooting steps are provided in the supplied sources.
11. When to contact service
Service need is unknown in the supplied diagnostic record. If P0456 is present, consult a Nissan/LEAF-qualified service provider for vehicle-specific diagnosis.
12. What the service center may check
- Confirm the stored DTC and retrieve any accompanying diagnostic information using appropriate vehicle-specific equipment.
- Use Nissan LEAF-specific service information to determine whether the displayed code is applicable and to identify the required diagnostic path.
- Do not use NTB17-082b as LEAF repair guidance; the bulletin explicitly excludes LEAF vehicles.
13. Possible repair or resolution
- Not yet established by verified evidence for the Nissan LEAF.
14. Affected vehicles
- Nissan Leaf · 2011–2019 · US
- Nissan Leaf · 2011 · US
15. Related TSBs / service bulletins
- NTB17-082b, published January 29, 2019: Nissan states that P0456 may be caused by an EVAP leak at the vent control valve O-ring for covered vehicles. The bulletin explicitly does not apply to LEAF vehicles.
- NTB-09-020-F, published November 15, 2013: Nissan states that a loose fuel fill cap can cause EVAP leak DTCs P0442, P0455, and P0456 on some 2007-2011 vehicles. The supplied evidence does not identify the covered model, so LEAF applicability is not established.
16. Recall information
- Not yet established by verified evidence. No recall information was supplied.
17. Official manufacturer information
Verified official sources: NHTSA Manufacturer Communication 10153007 (NTB17-082b), https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2015-2019.zip#nhtsa_id=10153007; and NHTSA Manufacturer Communication 10053956 (NTB-09-020-F), https://static.nhtsa.gov/odi/ffdd/tsbs/TSBS_RECEIVED_2010-2014.zip#nhtsa_id=10053956.
19. Frequently asked questions
Does Nissan bulletin NTB17-082b apply to the LEAF?
No. The verified bulletin summary explicitly states that NTB17-082b does not apply to LEAF vehicles.
Is a loose fuel fill cap a verified cause of P0456 on a Nissan LEAF?
Not yet established by verified evidence. NTB-09-020-F mentions a loose fuel fill cap for some 2007-2011 vehicles, but the supplied evidence does not identify the covered model or establish LEAF applicability.
Can I drive or charge a LEAF with P0456?
Unknown. The supplied diagnostic record lists both safe-to-drive and safe-to-charge status as unknown.