📖 What Does P0430 Mean?
The catalytic converter on bank 2 is not operating efficiently. Similar to P0420 but affects the second bank of cylinders in V6/V8 engines.
Symptoms
Check engine light, failed emissions test, reduced fuel economy, sulfur smell from exhaust, poor engine performance.
Common Causes
Failed catalytic converter on bank 2, faulty oxygen sensors, exhaust leaks, engine running rich or lean, oil contamination.
Possible Solutions
Replace catalytic converter on bank 2, install new oxygen sensors, repair exhaust leaks, fix fuel mixture issues, address oil burning.
Recommended Parts & Tools
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📦 Parts Needed
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Frequently Asked Questions about P0430
How serious is P0430?
This code has a medium severity level. This should be diagnosed and repaired soon to prevent further issues.
Can I drive with P0430?
You can typically drive short distances, but have it diagnosed as soon as possible.
How much does it cost to fix P0430?
Repair costs vary depending on the root cause, but typically range from $100-300 including parts and labor.
Related Diagnostic Codes
Other codes that may appear with P0430
System Too Lean Bank 1
System Too Rich Bank 1
System Too Lean Bank 2
System Too Rich Bank 2
Catalyst System Efficiency Below Threshold Bank 1
💡 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