P0440 1999 Toyota Camry Code - Evaporative Emission Control System Malfunction
Quick Answer
The Engine Control Module (ECM) tests the Evaporative Emission (EVAP) system for the following conditions: - Large and small leaks - Excess vacuum - Purge flow during non-commanded conditions - Fuel Level and Fuel Pressure sensor faults - EVAP Purge and Vent Valve faults The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. 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
- P0440 1999 Toyota Camry indicates Evaporative Emission Control System Malfunction.
- 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 P0440 1999 Toyota Camry Description
- Large and small leaks
- Excess vacuum
- Purge flow during non-commanded conditions
- Fuel Level and Fuel Pressure sensor faults
- EVAP Purge and Vent Valve faults
The ECM monitors the Fuel Tank Pressure sensor in order to determine the level of vacuum/pressure in the EVAP system. The ECM commands both the EVAP Purge Solenoid and the EVAP Vent Valve ON when the conditions are met in order to apply an engine vacuum to the EVAP system. The ECM commands the EVAP Purge Solenoid OFF once the system has reached a predetermined level of vacuum. This test verifies if a vacuum can be achieved in the EVAP system. Failure to develop a vacuum may be caused by a large leak or a restriction.
What are the Possible Causes of the DTC P0440 1999 Toyota Camry?
- 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
- EVAP canister or fuel tank leaks
- EVAP system hose leaking
- Fuel tank leaking
- Vapor pressure sensor
How to Fix the DTC P0440 1999 Toyota Camry?
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 P0440 1999 Toyota Camry 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 P0440 1999 Toyota Camry code?
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Frequently Asked Questions about P0440 1999 Toyota Camry Code
1. What does the OBDII code P0440 on a 1999 Toyota Camry mean?
The code P0440 indicates an Evaporative Emission Control System Malfunction in your 1999 Toyota Camry.
2. What are common symptoms of a P0440 code in a 1999 Toyota Camry?
Common symptoms include the check engine light coming on, a gasoline smell near the vehicle, and potential difficulty starting the engine.
3. What are the possible causes of a P0440 code in a 1999 Toyota Camry?
Potential causes include a loose or damaged gas cap, a faulty EVAP system purge valve, a cracked or damaged EVAP hose, or a malfunctioning EVAP canister.
4. How can I diagnose the cause of a P0440 code in my 1999 Toyota Camry?
You can start by checking the gas cap for tightness and inspecting the EVAP system components for any visible damage or leaks. A smoke test may also be performed to pinpoint the exact location of the leak.
5. Can I continue driving my 1999 Toyota Camry with a P0440 code?
It is generally safe to drive with a P0440 code, but it is important to address the issue promptly to prevent potential fuel economy loss and further emissions-related problems.
6. How can I repair a P0440 code on my 1999 Toyota Camry?
Repair options may include tightening or replacing the gas cap, replacing the EVAP system purge valve, repairing or replacing damaged hoses, or replacing the EVAP canister if necessary.
7. Will resetting the check engine light fix a P0440 code on a 1999 Toyota Camry?
Resetting the check engine light may temporarily turn it off, but it will not fix the underlying issue causing the P0440 code. The problem should be diagnosed and repaired to prevent the code from reoccurring.
8. Are there any DIY tips for troubleshooting a P0440 code on a 1999 Toyota Camry?
DIY tips include checking the gas cap for proper sealing, visually inspecting the EVAP system components, and using an OBDII scanner to monitor the EVAP system for leaks.
9. How much does it typically cost to repair a P0440 code on a 1999 Toyota Camry?
The cost of repairs for a P0440 code can vary depending on the specific cause of the issue and labor rates in your area. It is recommended to get a diagnosis from a mechanic to determine the exact cost.
10. Can a P0440 code on a 1999 Toyota Camry cause emissions testing failure?
Yes, a P0440 code can cause your 1999 Toyota Camry to fail emissions testing due to its impact on the vehicle's evaporative emissions control system. It is essential to address the issue before undergoing emissions testing.
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