### P0420 Catalytic Converter Issue

– Frequent Reasons:

Worn catalytic converter [1]

– Recommended Fixes:

Repair exhaust system https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Likely Problems:

Fuel delivery problems

– Diagnostic Steps:

Smoke test intake [1][7]

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## Auto Repair Terminology

### ABS (Anti-Lock Brake System)

– Purpose: Enables safe braking [7]

### Vehicle Computer System

– Role: Monitors sensors [7]

### Transmission System Parts

– Contains: Differential [7]

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## Repair Process Steps

1. **Symptom Assessment**:

Scan DTCs

2. **Component Testing**:

Test continuity

3. **Defective Unit Swap**:

Clear error codes

4. **System Validation**:

Test drive vehicle

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## Essential Tools

| **Tool Type** | **Examples** | **Purpose** |

|—|—|—|

| Code Reader | Innova | Retrieve DTCs |

| Mechanical Tools | Multimeter | Component repair |

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## Service Information References

### Mechanical Information System

– Features:

Component locations [8]

Factory repair procedures

### Digital Assistants

– Auto Repair Documents:

Electrical diagrams [5]

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## Affordable Maintenance Advice

– Preventative service extends vehicle life

– Learn basic diagnostics to prevent mechanic overselling

– Select certified components when OEM prices prohibitive [7]