AutoCodesInfiniti – P0452 2004 Infiniti G35

P0452 2004 Infiniti G35 Code - EVAP Control System Pressure Sensor Low Input

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
P0452 2004 Infiniti G35 indicates EVAP Control System Pressure Sensor Low Input.
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.
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Code Popularity 4,449
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jun 14, 2020
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Code P0452 2004 Infiniti G35 Description

The Evaporative Emission System (EVAP) control system pressure sensor detects pressure in the purge line. The sensor output voltage to the Engine Control Module (ECM) increases as pressure increases. The EVAP control system pressure sensor is not used to control the engine system. It is used only for on board diagnosis.
OBDII Code P0452 2004 Infiniti G35 - EVAP Control System Pressure Sensor Low Input - AutoCodes.com
P0452 2004 Infiniti G35 Code - EVAP Control System Pressure Sensor Low Input

What are the Possible Causes of the DTC P0452 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

How to Fix the DTC P0452 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 P0452 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.

Need more information about the P0452 2004 Infiniti G35 code?

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Need Help with the Code?

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0452 2004 Infiniti G35 Code

1. What does the OBDII code P0452 mean for a 2004 Infiniti G35?

P0452 indicates that the EVAP (Evaporative Emission Control) system's pressure sensor is reporting a lower-than-expected voltage, which suggests an issue with the sensor or related components.

2. What are the common symptoms of code P0452?

Symptoms may include the check engine light turning on, reduced fuel efficiency, difficulty refueling, or a noticeable fuel odor.

3. What causes the P0452 code to appear?

Possible causes include a faulty EVAP pressure sensor, damaged wiring or connectors, a malfunctioning fuel tank pressure sensor, or a problem with the EVAP system components like the vent valve or purge valve.

4. Can a loose gas cap trigger the P0452 code?

While a loose gas cap is a common EVAP system issue, it typically triggers a different code. However, it's worth checking the gas cap as part of your diagnostic process.

5. How do you diagnose the P0452 code?

Diagnosing P0452 involves inspecting the EVAP pressure sensor, checking the wiring and connectors for damage, and using a scan tool to monitor sensor readings and system pressure.

6. Is it safe to drive with the P0452 code on a 2004 Infiniti G35?

Yes, it’s usually safe to drive with this code, but ignoring it can lead to increased emissions, reduced fuel economy, and potential long-term damage to the EVAP system.

7. How do you fix the P0452 code?

Repairs may include replacing the EVAP pressure sensor, repairing damaged wiring or connectors, or addressing other EVAP system issues like a stuck vent or purge valve.

8. Can a faulty EVAP vent valve cause the P0452 code?

Yes, a stuck or malfunctioning vent valve can affect system pressure and trigger this code.

9. Does the P0452 code affect vehicle performance?

In most cases, this code does not directly affect engine performance but may result in increased emissions and potential fuel system inefficiencies.

10. How much does it cost to fix the P0452 code on a 2004 Infiniti G35?

Repair costs can vary but typically range from $100 to $400, depending on whether the issue is a simple wiring repair or requires replacing the EVAP pressure sensor.

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