### P0420 Emissions Control Malfunction
– Typical Sources:
Worn catalytic converter [1]
– Suggested Repairs:
Replace catalytic converter https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Likely Problems:
Fuel delivery problems
– Troubleshooting Process:
Check fuel pressure [1][7]
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## Auto Repair Terminology
### Skid Prevention Technology
– Function: Enables safe braking [7]
### Engine Management Unit
– Responsibility: Controls ignition timing [7]
### Powertrain Elements
– Contains: Drive axles [7]
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## Repair Process Steps
1. **Problem Identification**:
Scan DTCs
2. **Component Testing**:
Check voltage
3. **Component Installation**:
Follow torque specs
4. **System Validation**:
Test drive vehicle
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| OBD-II Tool | Autel | Live data streaming |
| Hand Instruments | Torque wrench | Component repair |
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## Service Information References
### Auto Repair Source
– Capabilities:
TSB access [8]
Technical illustrations
### Digital Assistants
– Vehicle Service App:
ECU pinouts [5]
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## Budget Repair Strategies
– Regular maintenance prevents major failures
– Learn basic diagnostics to avoid unnecessary repairs
– Select certified components when budget constrained [7]
