AutoCodesMitsubishi – P0453 Mitsubishi

P0453 Mitsubishi Code - EVAP System Pressure Sensor High 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
P0453 Mitsubishi indicates EVAP System Pressure Sensor High 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 5,391
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 P0453 Mitsubishi 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 P0453 Mitsubishi - EVAP System Pressure Sensor High Input - AutoCodes.com
P0453 Mitsubishi Code - EVAP System Pressure Sensor High Input

What are the Possible Causes of the DTC P0453 Mitsubishi?

  • 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 P0453 Mitsubishi?

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 P0453 Mitsubishi 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 P0453 Mitsubishi code?

Need more information on how to fix the P0453 Mitsubishi code? Get Access to Factory Service Manuals

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 P0453 Mitsubishi Code

1. What does the OBDII code P0453 mean on a Mitsubishi?

P0453 indicates that the EVAP (Evaporative Emission Control) system pressure sensor is detecting a higher-than-normal voltage signal, suggesting a possible fault in the sensor or related components.

2. What are the common symptoms of code P0453 in a Mitsubishi?

Symptoms may include an illuminated check engine light, decreased fuel efficiency, difficulty filling the gas tank, or a noticeable fuel odor.

3. What causes the P0453 code in a Mitsubishi?

Common causes include a faulty EVAP pressure sensor, damaged wiring or connectors, a blocked EVAP vent, or a malfunctioning PCM (Powertrain Control Module).

4. Can I drive my Mitsubishi with a P0453 code?

Driving with a P0453 code is generally safe in the short term, but it may result in increased emissions and fuel inefficiency. It’s recommended to address the issue promptly.

5. How do I diagnose the P0453 code on a Mitsubishi?

Start by inspecting the EVAP pressure sensor, wiring, and connectors for damage or corrosion. Use a multimeter to check sensor voltage and verify proper operation with a scan tool.

6. How do you fix the P0453 code on a Mitsubishi?

Repairs may include replacing the EVAP pressure sensor, cleaning or replacing damaged wiring, inspecting and clearing EVAP system blockages, or reprogramming the PCM if necessary.

7. What tools are needed to troubleshoot the P0453 code?

You’ll need an OBDII scanner, a digital multimeter, and possibly a smoke machine to check for EVAP system leaks or blockages.

8. Can a loose gas cap cause the P0453 code in a Mitsubishi?

A loose or faulty gas cap is unlikely to cause a P0453 code directly, but it can contribute to other EVAP system issues. Always check the gas cap as part of your diagnosis.

9. How much does it cost to fix the P0453 code on a Mitsubishi?

Repair costs vary, but replacing an EVAP pressure sensor typically costs between $100 and $300, depending on labor rates and parts pricing.

10. Can I clear the P0453 code without fixing it?

Clearing the code with an OBDII scanner won’t resolve the underlying issue, and the code will likely return until the problem is fixed.

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