P0446 Jeep Code - EVAP Purge Solenoid Stuck Open
Quick Answer
The Evaporative System (EVAP) canister vent control valve is located on the EVAP canister and is used to seal the canister vent. Common causes include Missing 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
- P0446 Jeep indicates EVAP Purge Solenoid Stuck Open.
- Common causes
- Common causes include Missing 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 P0446 Jeep Description
This solenoid valve responds to signals from the Engine Control Module (ECM). When the ECM sends an ON signal, the coil in the solenoid valve is energized. A plunger will then move to seal the canister vent. The ability to seal the vent is necessary for the on board diagnosis of other evaporative emission control system components.
This solenoid valve is used only for diagnosis, and usually remains opened.
What are the Possible Causes of the DTC P0446 Jeep?
- Missing Fuel cap
- Incorrect fuel filler cap used
- Fuel filler cap remains open or fails to close
- Foreign matter caught in fuel filler cap
- Vent control valve harness is open or shorted
- Vent control valve circuit poor electrical connection
- Faulty vent control valve
How to Fix the DTC P0446 Jeep?
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 P0446 Jeep 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 P0446 Jeep Code
1. What does the OBDII code P0446 mean on a Jeep?
P0446 indicates a malfunction in the EVAP (Evaporative Emission Control System) vent control circuit, often related to the purge solenoid being stuck open.
2. What are the common symptoms of code P0446 on a Jeep?
Symptoms may include the Check Engine Light turning on, a noticeable fuel odor, decreased fuel efficiency, or difficulty filling the gas tank.
3. What causes code P0446 in a Jeep?
Common causes include a stuck-open EVAP purge solenoid, a clogged or damaged vent valve, faulty wiring, or a malfunctioning fuel tank pressure sensor.
4. Can a loose gas cap trigger P0446 on a Jeep?
While a loose gas cap is more likely to cause a P0456 or P0457 code, it’s still a good idea to check and tighten the gas cap when troubleshooting P0446.
5. How can I fix the P0446 code on my Jeep?
Start by inspecting the EVAP purge solenoid and vent valve for signs of damage or clogging. Replace them if necessary, and check for wiring or connector issues.
6. Is it safe to drive with a P0446 code on my Jeep?
Yes, it’s generally safe to drive with this code, but prolonged operation can lead to reduced fuel efficiency and increased emissions.
7. How much does it cost to fix the P0446 code on a Jeep?
Repairs can range from $50 to $300, depending on whether you replace the purge solenoid, vent valve, or other EVAP components.
8. How do I diagnose the P0446 code on a Jeep?
Use an OBDII scanner to confirm the code, then inspect the EVAP system components for damage, test the purge solenoid’s functionality, and check for vacuum leaks.
9. Can a clogged charcoal canister cause P0446 on a Jeep?
Yes, a clogged or damaged charcoal canister can restrict airflow in the EVAP system and trigger this code.
10. Will clearing the P0446 code fix the problem on my Jeep?
Clearing the code may turn off the Check Engine Light temporarily, but the underlying issue must be resolved to prevent the code from returning.
Discuss the causes and fixes for P0446 Jeep OBDII Code
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