P0414
Auxiliary Emissions Controls — Code P0414
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i Description
Diagnostic trouble code P0414 relates to the auxiliary emissions controls. The vehicle's control module has detected a fault condition in this circuit or system. Consult a manufacturer-specific service manual for detailed information about this code for your particular vehicle.
? Common Causes
- Failed EGR valve
- Catalytic converter degradation
- EVAP leak
- Purge valve fault
! Symptoms
- Check engine light
- Failed emissions test
- Fuel smell
- Rough idle
# Diagnostic Steps
- Inspect EGR valve operation
- Test catalytic converter efficiency
- Smoke-test EVAP system
- Check purge and vent valves
⚙ Typical Fix
Diagnose and repair the auxiliary emissions controls fault. Inspect wiring, connectors, and the related component. Replace as necessary.
Parts Needed
Refer to manufacturer service manual for specific parts
Estimated Cost
$150-$1200
↔ Related Codes
Q Frequently Asked Questions
Code P0414 relates to the auxiliary emissions controls. You can likely drive short distances, but have it checked soon to prevent further issues.
Repair costs vary depending on the specific cause. For auxiliary emissions controls issues, expect to pay $150-$1200 in Australia, including parts and labour. Get a proper diagnosis before committing to repairs.
☞ Learn More
- What is OBD-II? — Complete guide to your car's diagnostic system
- How to Read DTC Codes — Step-by-step with a Bluetooth scanner
- OBD-II Scanner Buying Guide — Find the best scanner for your car