### P0420 Catalytic Converter Issue
– Common Causes:
Faulty oxygen sensor [1]
– Common Solutions:
Replace catalytic converter https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Potential Issues:
Fuel delivery problems
– Testing Procedure:
Check fuel pressure [1][7]
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## Auto Repair Terminology
### Skid Prevention Technology
– Purpose: Enables safe braking [7]
### Vehicle Computer System
– Responsibility: Monitors sensors [7]
### Drivetrain Components
– Contains: Drive axles [7]
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## Service Procedure Stages
1. **Initial Diagnosis**:
Conduct road test
2. **Part Evaluation**:
Test continuity
3. **Parts Replacement**:
Clear error codes
4. **Final Quality Check**:
Confirm warning light reset
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Innova | Retrieve DTCs |
| Mechanical Tools | Torque wrench | Component repair |
—
## Service Information References
### Auto Repair Source
– Features:
TSB access [8]
OEM specifications
### Digital Assistants
– Auto Repair Documents:
Electrical diagrams [5]
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## Budget Repair Strategies
– Regular maintenance avoids costly repairs
– Master code scanning to prevent mechanic overselling
– Select certified components when OEM prices prohibitive [7]