📖 What Does P0404 Mean?
Symptoms
- • Rough idle
- • poor performance
- • failed emissions test
- • check engine light
- • hesitation during acceleration.
Common Causes
- • Faulty EGR valve position sensor
- • carbon buildup on EGR valve
- • wiring issues to EGR system
- • mechanical problems with EGR valve.
Possible Solutions
Replace EGR valve position sensor, clean EGR valve and passages, repair wiring, replace EGR valve if mechanically faulty.
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❓ Common Questions About P0404
Can I drive with code P0404?
You can drive for a short time, but should address code P0404 soon to avoid worsening the problem or failing an emissions test.
How much does it cost to fix P0404?
The estimated repair cost for code P0404 is between $50 and $350. This includes parts and labor for most makes and models.
Is this code easy to fix myself?
This repair is considered moderate. It may require specialized tools or significant disassembly. Professional help is recommended if you aren't an experienced DIYer.
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View Best Sellers ↗Related Diagnostic Codes
Other codes that may appear with P0404
Exhaust Gas Recirculation Flow Excessive Detected
P0403: Emissions Control System Not Operating Within Normal Parameters
P0405: Emissions Control System Not Operating Within Normal Parameters
P0406: Emissions Control System Not Operating Within Normal Parameters
💡 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