## Common Diagnostic Trouble Codes

### P0420 Catalytic Converter Issue

– Frequent Reasons:

Exhaust leaks [1]

– Recommended Fixes:

Replace catalytic converter https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Likely Problems:

Faulty MAF sensor

– Testing Procedure:

Check fuel pressure [1][7]

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## Auto Repair Terminology

### ABS (Anti-Lock Brake System)

– Function: Maintains steering control [7]

### Engine Management Unit

– Role: Controls ignition timing [7]

### Drivetrain Components

– Includes: Transmission [7]

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## Service Procedure Stages

1. **Problem Identification**:

Perform visual inspection

2. **Component Testing**:

Measure resistance

3. **Defective Unit Swap**:

Follow torque specs

4. **System Validation**:

Test drive vehicle

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## Necessary Equipment

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

|—|—|—|

| OBD-II Tool | BlueDriver | Live data streaming |

| Mechanical Tools | Torque wrench | Component repair |

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## Technical Data Resources

### Mechanical Information System

– Capabilities:

TSB access [8]

OEM specifications

### Mobile Applications

– Vehicle Service App:

ECU pinouts [5]

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## Cost-Saving Tips

– Routine checkups avoids costly repairs

– Learn basic diagnostics to avoid unnecessary repairs

– Install quality alternatives when budget constrained [7]