### P0420 Catalytic Converter Issue
– Common Causes:
Faulty oxygen sensor [1]
– Recommended Fixes:
Replace catalytic converter https://carautorepair.site/
### P0171 System Too Lean
– Potential Issues:
Vacuum leaks
– Testing Procedure:
Smoke test intake [1][7]
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## Vehicle Service Vocabulary
### ABS (Anti-Lock Brake System)
– Purpose: Prevents wheel lockup [7]
### Engine Management Unit
– Responsibility: Manages fuel injection [7]
### Drivetrain Components
– Includes: Drive axles [7]
—
## Service Procedure Stages
1. **Problem Identification**:
Conduct road test
2. **Component Testing**:
Measure resistance
3. **Defective Unit Swap**:
Follow torque specs
4. **Final Quality Check**:
Test drive vehicle
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Innova | Live data streaming |
| Physical Equipment | Smoke machine | Component repair |
—
## Service Information References
### Vehicle Service Database
– Capabilities:
Component locations [8]
OEM specifications
### Digital Assistants
– Auto Repair Documents:
Electrical diagrams [5]
—
## Affordable Maintenance Advice
– Regular maintenance avoids costly repairs
– Master code scanning to prevent mechanic overselling
– Use aftermarket parts when OEM prices prohibitive [7]