## Typical Automotive DTCs

### P0420 Emissions Control Malfunction

– Frequent Reasons:

Worn catalytic converter [1]

– Recommended Fixes:

Replace catalytic converter https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Possible Defects:

Fuel delivery problems

– Testing Procedure:

Smoke test intake [1][7]

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## Auto Repair Terminology

### Electronic Braking System

– Function: Maintains steering control [7]

### Vehicle Computer System

– Role: Monitors sensors [7]

### Powertrain Elements

– Includes: Differential [7]

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## Repair Process Steps

1. **Initial Diagnosis**:

Scan DTCs

2. **System Verification**:

Test continuity

3. **Parts Replacement**:

Follow torque specs

4. **Final Quality Check**:

Ensure proper operation

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## Essential Tools

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

|—|—|—|

| Code Reader | Innova | Retrieve DTCs |

| Hand Instruments | Multimeter | Component repair |

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## Technical Data Resources

### Auto Repair Source

– Capabilities:

Component locations [8]

Technical illustrations

### Digital Assistants

– Vehicle Service App:

ECU pinouts [5]

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## Affordable Maintenance Advice

– Preventative service extends vehicle life

– Understand DTC meanings to avoid unnecessary repairs

– Select certified components when OEM prices prohibitive [7]