P0442 OBD2 Error Code - Evaporative Emission Control System leak Detected (small leak)
What does this error code mean?
Evaporative Emission Control System leak Detected (small leak)
Common symptoms
- Check engine light on
- Exhaust odor
- Failing emission test
What causes it?
- Catalyst or O2 sensor
- EGR system fault
- Exhaust leak
How to fix
- Check oxygen sensors
- Clean or replace EGR valve
- Repair exhaust leak
Is it safe to drive?
Short trips at low load are acceptable. Long journeys or heavy loads are not recommended; get a diagnosis as soon as possible.
Estimated repair cost
Repair costs vary by cause and vehicle. Have a technician diagnose the issue.
Expert opinion
The code alone does not identify the faulty part; vehicle and measurement can yield different results. Have OBD-II reading and necessary checks done at a qualified workshop.
For information only. Content on this site is for general guidance; it does not replace professional diagnosis or repair. Always consult a qualified technician before making decisions about your vehicle.