## Frequent Vehicle Error Codes

### P0420 Catalytic Converter Issue

– Frequent Reasons:

Faulty oxygen sensor [1]

– Common Solutions:

Repair exhaust system https://carautorepair.site/

### P0171 System Too Lean

– Potential Issues:

Faulty MAF sensor

– Testing Procedure:

Check fuel pressure [1][7]

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## Car Maintenance Terms

### Skid Prevention Technology

– Function: Maintains steering control [7]

### Vehicle Computer System

– Role: Controls ignition timing [7]

### Drivetrain Components

– Includes: Differential [7]

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## Mechanical Fixing Workflow

1. **Initial Diagnosis**:

Scan DTCs

2. **Part Evaluation**:

Check voltage

3. **Defective Unit Swap**:

Clear error codes

4. **Final Quality Check**:

Confirm warning light reset

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## Essential Tools

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

|—|—|—|

| Diagnostic Scanner | BlueDriver | Live data streaming |

| Mechanical Tools | Torque wrench | Component repair |

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## Service Information References

### Mechanical Information System

– Features:

TSB access [8]

Technical illustrations

### Smartphone Tools

– Vehicle Service App:

Component testing guides [5]

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## Cost-Saving Tips

– Regular maintenance extends vehicle life

– Master code scanning to avoid unnecessary repairs

– Use aftermarket parts when budget constrained [7]