## Common Diagnostic Trouble Codes

### P0420 Emissions Control Malfunction

– Common Causes:

Exhaust leaks [1]

– Suggested Repairs:

Repair exhaust system https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Possible Defects:

Faulty MAF sensor

– Testing Procedure:

Inspect injectors [1][7]

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## Car Maintenance Terms

### Skid Prevention Technology

– Function: Prevents wheel lockup [7]

### ECM/ECU (Engine Control Module)

– Responsibility: Manages fuel injection [7]

### Drivetrain Components

– Includes: Differential [7]

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## Mechanical Fixing Workflow

1. **Initial Diagnosis**:

Conduct road test

2. **Part Evaluation**:

Test continuity

3. **Parts Replacement**:

Follow torque specs

4. **Final Quality Check**:

Ensure proper operation

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## Critical Instruments

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

|—|—|—|

| Diagnostic Scanner | Autel | Retrieve DTCs |

| Hand Instruments | Torque wrench | Electrical testing |

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## Technical Data Resources

### Auto Repair Source

– Capabilities:

Component locations [8]

Factory repair procedures

### Smartphone Tools

– Auto Repair Documents:

Component testing guides [5]

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## Affordable Maintenance Advice

– Routine checkups extends vehicle life

– Master code scanning to avoid unnecessary repairs

– Use aftermarket parts when budget constrained [7]