📖 What Does P0442 Mean?
A small leak has been detected in the evaporative emission control system. This system prevents fuel vapors from escaping into the atmosphere.
Symptoms
Check engine light (usually the only symptom), occasional fuel odor, failed emissions test.
Common Causes
Loose or damaged gas cap, cracked EVAP hoses, faulty purge valve, damaged charcoal canister, loose connections in EVAP system.
Possible Solutions
Tighten or replace gas cap, inspect and replace damaged EVAP hoses, test and replace purge valve, check charcoal canister, perform smoke test to locate leak.
Recommended Parts & Tools
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📦 Parts Needed
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Frequently Asked Questions about P0442
How serious is P0442?
This code has a low severity level. While not immediately dangerous, this should be addressed during your next service.
Can I drive with P0442?
Generally safe to drive, but should be addressed during your next service.
How much does it cost to fix P0442?
Repair costs vary depending on the root cause, but typically range from $50-150 including parts and labor.
Related Diagnostic Codes
Other codes that may appear with P0442
Evaporative Emission Control System Malfunction
Emission Control System Code P0441
Evaporative Emission Control System Purge Control Valve Circuit Malfunction
Evaporative Emission Control System Vent Control Circuit Malfunction
EVAP System Leak Detected Large Leak
💡 Why These Codes Are Related:
- • Similar Issues: Same root cause or component failure
- • Related Problems: Often occur together due to system interactions
- • Sequential Codes: Progressive failure stages or multiple sensors
- • Same System: Components within the same automotive system