P0455 Chrysler Code - EVAP System Large Leak
Quick Answer
The Evaporative emissions (EVAP) system is design to prevent the escape of fuel vapors from the fuel 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
- P0455 Chrysler indicates EVAP System Large 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
- 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 P0455 Chrysler Description
During the self-diagnostics, the Powertrain Control Module (PCM) first checks the Leak Detection Pump (LDP) for electrical and mechanical faults. If the first checks pass, the PCM then uses the LDP to seal the vent valve and pump air into the system to pressurize it. If a leak is present, the PCM will continue pumping the LDP to replace the air that leaks out. The PCM determines the size of the leak based on how fast/long it must pump the LDP as it tries to maintain pressure in the system.
What are the Possible Causes of the DTC P0455 Chrysler?
- 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
How to Fix the DTC P0455 Chrysler?
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.
Code Tech Notes
The P0442 code means that the control module has detected a small leak in the Evaporative Emission (EVAP). A loose fuel tank filler cap is the most common cause that triggers the P0442 code.
Dodge EVAP Diagnosis & Repair Diagnosis Troubles Codes P0442 and P0455
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What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P0455 Chrysler 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 P0455 Chrysler Code
1. What does the OBDII code P0455 mean on a Chrysler vehicle?
P0455 indicates a large leak in the EVAP (Evaporative Emission Control) system, which prevents fuel vapors from escaping into the atmosphere.
2. What are common symptoms of code P0455 in a Chrysler?
Symptoms may include the Check Engine Light turning on, a noticeable fuel smell near the vehicle, and, in rare cases, a slight decrease in fuel efficiency.
3. What are the most common causes of a P0455 code on a Chrysler?
Common causes include a loose or damaged gas cap, a cracked or disconnected EVAP hose, a faulty purge valve, or a damaged EVAP canister.
4. Can a loose gas cap trigger a P0455 code?
Yes, a loose, missing, or damaged gas cap is one of the most frequent causes of a P0455 code.
5. How do I fix the P0455 code on my Chrysler?
Start by ensuring the gas cap is tight and in good condition. If the code persists, inspect the EVAP hoses and components for leaks or damage and replace any faulty parts.
6. Is it safe to drive a Chrysler with a P0455 code?
Yes, it’s generally safe to drive with a P0455 code, but it’s best to address the issue promptly to avoid potential long-term damage to the EVAP system.
7. How do I diagnose a P0455 code on a Chrysler?
Begin by checking the gas cap. Then inspect EVAP hoses and components for cracks, disconnects, or other damage. A smoke test may help locate leaks if the issue isn’t immediately visible.
8. How much does it cost to repair a P0455 code on a Chrysler?
Repair costs vary depending on the cause. A gas cap replacement may cost $20-$50, while repairs to hoses or valves can range from $100 to $300 or more.
9. Can extreme weather cause a P0455 code in a Chrysler?
Yes, extreme hot or cold weather can sometimes cause EVAP components like hoses or seals to crack, leading to a P0455 code.
10. Will clearing the P0455 code fix the issue?
Clearing the code will reset the Check Engine Light, but if the underlying issue isn’t addressed, the code will likely return.
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