## Typical Automotive DTCs

### P0420 Emissions Control Malfunction

– Frequent Reasons:

Worn catalytic converter [1]

– Recommended Fixes:

Repair exhaust system https://carautorepair.site/

### P0171 System Too Lean

– Possible Defects:

Faulty MAF sensor

– Troubleshooting Process:

Check fuel pressure [1][7]

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## Auto Repair Terminology

### Electronic Braking System

– Purpose: Maintains steering control [7]

### ECM/ECU (Engine Control Module)

– Responsibility: Controls ignition timing [7]

### Powertrain Elements

– Contains: Drive axles [7]

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## Repair Process Steps

1. **Symptom Assessment**:

Perform visual inspection

2. **Component Testing**:

Test continuity

3. **Component Installation**:

Use OEM parts

4. **System Validation**:

Confirm warning light reset

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## Essential Tools

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

|—|—|—|

| OBD-II Tool | Innova | Retrieve DTCs |

| Physical Equipment | Torque wrench | Electrical testing |

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## Technical Data Resources

### Mechanical Information System

– Capabilities:

Wiring diagrams [8]

Technical illustrations

### Mobile Applications

– Auto Repair Documents:

Component testing guides [5]

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## Affordable Maintenance Advice

– Preventative service avoids costly repairs

– Learn basic diagnostics to avoid unnecessary repairs

– Install quality alternatives when budget constrained [7]