P0451 2004 Infiniti G35 Code - EVAP Control System Pressure Sensor Performance
Quick Answer
The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. Common causes include Faulty Evaporative Emission System (EVAP) Pressure Sensor, Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted, Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection. 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
- P0451 2004 Infiniti G35 indicates EVAP Control System Pressure Sensor Performance.
- Common causes
- Common causes include Faulty Evaporative Emission System (EVAP) Pressure Sensor, Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted, Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection.
- 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 P0451 2004 Infiniti G35 Description
What are the Possible Causes of the DTC P0451 2004 Infiniti G35?
- Faulty Evaporative Emission System (EVAP) Pressure Sensor
- Evaporative Emission System (EVAP) Pressure sensor harness is open or shorted
- Evaporative Emission System (EVAP) Pressure sensor circuit poor electrical connection
- Faulty Engine Control Module (ECM)
How to Fix the DTC P0451 2004 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.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0451 2004 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 P0451 2004 Infiniti G35 Code
1. What does OBDII code P0451 mean for a 2004 Infiniti G35?
P0451 indicates an issue with the EVAP system pressure sensor, which monitors fuel vapor pressure in the system to detect leaks.
2. What are the common symptoms of a P0451 code in a 2004 Infiniti G35?
Symptoms may include an illuminated check engine light, reduced fuel efficiency, possible gas odor, or difficulty passing an emissions test.
3. What causes the P0451 code to appear in a 2004 Infiniti G35?
Common causes include a faulty EVAP pressure sensor, damaged wiring, a clogged EVAP canister, or a malfunctioning vent or purge valve.
4. Can a loose gas cap trigger the P0451 code on a 2004 Infiniti G35?
While a loose gas cap usually triggers other EVAP codes, it’s worth checking as it can indirectly affect system pressure readings.
5. How do I diagnose the P0451 code on my 2004 Infiniti G35?
Start by inspecting the EVAP pressure sensor, wiring, and connectors. Use a scan tool to monitor sensor data and perform a smoke test to check for leaks.
6. Is the P0451 code serious for a 2004 Infiniti G35?
It’s not typically an urgent issue but should be addressed promptly as it can affect emissions and fuel efficiency.
7. How can I fix the P0451 code on a 2004 Infiniti G35?
Repairs may include replacing the EVAP pressure sensor, fixing damaged wiring, cleaning or replacing the EVAP canister, or repairing leaks in the system.
8. How much does it cost to repair the P0451 code on a 2004 Infiniti G35?
Costs vary but replacing the EVAP pressure sensor typically ranges from $100 to $300, including parts and labor.
9. Can I drive my 2004 Infiniti G35 with a P0451 code?
You can drive with a P0451 code, but it’s best to fix it soon to avoid potential issues with emissions or fuel efficiency.
10. Will clearing the P0451 code make it go away permanently?
Clearing the code may turn off the check engine light temporarily, but the issue will return unless the underlying problem is resolved.
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