### P0420 Catalytic Converter Issue
– Common Causes:
Worn catalytic converter [1]
– Recommended Fixes:
Diagnose fuel trim https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Likely Problems:
Fuel delivery problems
– Diagnostic Steps:
Inspect injectors [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: Differential [7]
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## Repair Process Steps
1. **Problem Identification**:
Conduct road test
2. **Component Testing**:
Measure resistance
3. **Parts Replacement**:
Follow torque specs
4. **System Validation**:
Confirm warning light reset
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## Essential Tools
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | BlueDriver | Retrieve DTCs |
| Mechanical Tools | Multimeter | Component repair |
—
## Service Information References
### Mechanical Information System
– Features:
Wiring diagrams [8]
Technical illustrations
### Mobile Applications
– Vehicle Service App:
ECU pinouts [5]
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## Affordable Maintenance Advice
– Regular maintenance avoids costly repairs
– Learn basic diagnostics to avoid unnecessary repairs
– Select certified components when budget constrained [7]