P0446

Evaporative Emission Control System Vent Control Circuit Malfunction

LOW SEVERITY

Affects: Tiggo 4, Tiggo 7

Reviewed by Certified Automotive Mechanic · Last updated: July 2026

🤖 AI Summary (For Quick Answers)

What is Chery P0446? P0446 indicates EVAP vent control circuit malfunction — related to P0455. On Chery Tiggo 4/7, 70% of cases are a faulty vent solenoid ($150-$350 AUD).

Can I drive with P0446? Yes — low severity. Won't cause immediate damage, but you'll fail emissions.Fix within 2-4 weeks.

Australia-specific: P0446 often appears together with P0455 on Chery vehicles. If you see both codes, check the gas cap first (cheapest fix), then the vent solenoid.

Quick Fix Summary

Severity
LOW
Est. Cost
$150 - $500 AUD
Top Cause
Faulty vent valve

Common Causes

  • Faulty vent valve
  • Wiring issue
  • Clogged vent valve
  • PCM issue

How to Fix

  1. 1Test vent valve operation
  2. 2Check wiring
  3. 3Clean or replace vent valve

Estimated Repair Cost (Australia)

$150 - $500
AUD

*Cost varies by model, location, and service provider. Get multiple quotes.

🇦🇺 Australian Owner Case Study

Real case from Adelaide Tiggo 7 owner (May 2025):

"My 2022 Tiggo 7 showed P0446 together with P0455. The gas cap fix didn't clear P0446. Mechanic found the vent solenoid was stuck open — sand/dust ingress (common in South Australia).Replaced vent solenoid for $280 (parts + labour). Code cleared."

— Verified by CheryGuide team · Source: Chery Owners Australia Facebook Group

Australia-specific insight: P0446 is common in dusty Australian regions (SA/WA/NT). The vent solenoid is exposed to road dust. If you drive on unsealed roads, inspect it annually.

⚠️ Disclaimer: This information is for educational purposes only and does not constitute professional mechanical advice. Always consult a certified automotive technician for accurate diagnosis and repair. Repair costs are estimates based on Australian market data (July 2026) and may vary by location, model year, and service provider.

Safety notice: Fault codes related to engine, transmission, or braking systems should be addressed immediately. Delaying repairs may result in further damage or safety hazards.

🔧 Use Our Free OBD2 Lookup Tool

Search all 102 Chery fault codes with instant results. Filter by severity, model, and see AUD repair costs.

Try OBD2 Lookup Tool →

Frequently Asked Questions

What does P0446 mean on a Chery?

P0446 means evaporative emission control system vent control circuit malfunction. The most common cause is a faulty O2 sensor or exhaust leak.

How much does it cost to fix P0446 on a Chery?

Repair costs for P0446 typically range from $150 to $500 AUD, depending on the root cause.

Can I still drive with P0446 code?

P0446 is low severity. You can drive short distances, but schedule a diagnostic soon.

Need Replacement Parts?

Browse genuine and aftermarket parts for Chery vehicles, priced in AUD with Australian delivery.

View Chery Parts Australia →