P0456 2006 Infiniti G35 Code - EVAP Control System Very Small Leak Detected
Quick Answer
This diagnosis detects leaks in the Evaporative Emission System (EVAP) purge line using engine intake manifold vacuum. Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
- What it means
- P0456 2006 Infiniti G35 indicates EVAP Control System Very Small Leak Detected.
- Common causes
- Common causes include Missing or loose fuel cap, Incorrect fuel filler cap used, Fuel filler cap remains open or fails to close.
- Severity
- Low - monitor the vehicle and repair when practical.
- Can I drive?
- The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.
Code P0456 2006 Infiniti G35 Description
The vacuum cut valve bypass valve is opened to clear the line between the fuel tank and the EVAP canister purge volume control solenoid valve. The EVAP canister vent control valve will then be closed to shut the EVAP purge line off. The EVAP canister purge volume control solenoid valve is opened to depressurize the EVAP purge line using intake manifold vacuum. After this depressurization is implemented, the EVAP canister purge volume control solenoid valve will be closed.
What are the Possible Causes of the DTC P0456 2006 Infiniti G35?
- Missing or loose fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Evaporative Emission (EVAP) canister or fuel tank leaks
- Evaporative Emission (EVAP) system hose leaking
- Fuel tank leaking
How to Fix the DTC P0456 2006 Infiniti G35?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
Code Tech Notes
There is an Infiniti Service Bulletin to help diagnose the P0456 code:
Infiniti Factory Service Bulletin OBDII Code P0456
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0456 2006 Infiniti G35 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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Frequently Asked Questions about P0456 2006 Infiniti G35 Code
1. What does the OBDII code P0456 mean on a 2006 Infiniti G35?
P0456 indicates a "Very Small Leak Detected" in the EVAP (Evaporative Emission Control) system, which controls fuel vapor emissions.
2. What are the common symptoms of code P0456 on a 2006 Infiniti G35?
Symptoms may include an illuminated check engine light, a faint fuel odor, or no noticeable symptoms at all in some cases.
3. What causes the P0456 code on a 2006 Infiniti G35?
Common causes include a loose or damaged gas cap, a cracked EVAP hose, a faulty purge valve, or a leaking charcoal canister.
4. Can a loose gas cap trigger the P0456 code?
Yes, a loose, damaged, or improperly sealed gas cap is one of the most common causes of the P0456 code.
5. How do I fix the P0456 code on my 2006 Infiniti G35?
Start by checking and tightening the gas cap. If the issue persists, inspect EVAP system components like hoses, the purge valve, and the charcoal canister for leaks or damage.
6. Can I drive my 2006 Infiniti G35 with the P0456 code?
Yes, the car is generally safe to drive, but ignoring the issue can lead to decreased fuel efficiency and emission test failures.
7. How can I confirm the cause of the P0456 code?
A smoke test is often used by mechanics to identify leaks in the EVAP system, as it helps pinpoint tiny leaks that may not be visible.
8. Will clearing the P0456 code fix the problem?
Clearing the code will turn off the check engine light temporarily, but the issue will reoccur if the underlying problem is not resolved.
9. How much does it cost to fix the P0456 code on a 2006 Infiniti G35?
Repair costs can range from $10 for a new gas cap to $200+ for parts like the purge valve or charcoal canister, plus labor if done by a mechanic.
10. Can extreme weather conditions cause the P0456 code?
Yes, extreme heat or cold can cause components like EVAP hoses to crack or seals to degrade, potentially triggering the code.
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