## Typical Automotive DTCs

### P0420 Catalytic Converter Issue

– Frequent Reasons:

Exhaust leaks [1]

– Recommended Fixes:

Replace catalytic converter https://carautorepair.site/

### P0171 System Too Lean

– Likely Problems:

Vacuum leaks

– Diagnostic Steps:

Check fuel pressure [1][7]

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## Vehicle Service Vocabulary

### Electronic Braking System

– Function: Prevents wheel lockup [7]

### Vehicle Computer System

– Role: Controls ignition timing [7]

### Powertrain Elements

– Contains: Differential [7]

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## Service Procedure Stages

1. **Problem Identification**:

Scan DTCs

2. **System Verification**:

Measure resistance

3. **Component Installation**:

Clear error codes

4. **Post-Repair Verification**:

Ensure proper operation

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## Necessary Equipment

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

|—|—|—|

| Diagnostic Scanner | Innova | Live data streaming |

| Mechanical Tools | Smoke machine | Component repair |

—

## Repair Documentation Sources

### Auto Repair Source

– Capabilities:

Component locations [8]

Factory repair procedures

### Smartphone Tools

– Vehicle Service App:

ECU pinouts [5]

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## Cost-Saving Tips

– Routine checkups prevents major failures

– Learn basic diagnostics to avoid unnecessary repairs

– Select certified components when budget constrained [7]