P1420 Toyota Code - EVAP Canister Small Leak
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 High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- P1420 Toyota indicates EVAP Canister Small Leak.
- 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
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
Code P1420 Toyota 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 P1420 Toyota?
- 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
- Faulty EVAP Purge solenoid
How to Fix the DTC P1420 Toyota?
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 P1420 Toyota 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 P1420 Toyota code?
Need more information on how to fix the P1420 Toyota code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the P1420 Toyota code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about P1420 Toyota Code
1. What does the OBDII code P1420 mean on a Toyota?
P1420 indicates a small leak in the EVAP (Evaporative Emission Control) system, specifically related to the charcoal canister or its components.
2. What are the symptoms of code P1420 on a Toyota?
Common symptoms include the Check Engine Light turning on and potentially a slight loss in fuel efficiency, though drivability is usually unaffected.
3. What causes code P1420 on a Toyota?
Causes may include a damaged or cracked EVAP canister, loose or deteriorated hoses, faulty purge or vent valves, or a small leak in the EVAP system.
4. Can code P1420 cause serious damage to my Toyota?
No, P1420 does not typically cause immediate damage, but ignoring it can lead to emissions system inefficiency and potential environmental impacts.
5. How do I diagnose the P1420 code on my Toyota?
Inspect the EVAP system components for cracks, loose connections, or damage, and use a smoke test to identify leaks in the system if necessary.
6. What parts might need replacement for code P1420?
Possible parts include the EVAP canister, purge valve, vent valve, or damaged hoses and connectors.
7. Can I drive my Toyota with code P1420?
Yes, you can drive with this code, but it's advisable to fix the issue promptly to avoid emissions-related problems and ensure compliance with regulations.
8. How much does it cost to repair code P1420 on a Toyota?
Repair costs can range from $100 to $500 depending on whether the issue is a simple hose replacement or a full EVAP canister replacement.
9. Will a loose gas cap trigger code P1420 on a Toyota?
A loose or faulty gas cap is less likely to trigger P1420, as this code specifically points to a small leak in the EVAP canister system.
10. Can I clear code P1420 without repairing it?
You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isn't fixed.
Discuss the causes and fixes for P1420 Toyota OBDII Code
-
My Toyota highlander hibrid put up check with the code p1420, it was observed that it consume fuel like ordinary highlander. What can I do.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
