## Frequent Vehicle Error Codes

### P0420 Catalytic Converter Issue

– Common Causes:

Worn catalytic converter [1]

– Recommended Fixes:

Diagnose fuel trim https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Potential Issues:

Vacuum leaks

– Testing Procedure:

Smoke test intake [1][7]

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## Vehicle Service Vocabulary

### Electronic Braking System

– Function: Enables safe braking [7]

### Vehicle Computer System

– Role: Manages fuel injection [7]

### Drivetrain Components

– Contains: Transmission [7]

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## Service Procedure Stages

1. **Problem Identification**:

Scan DTCs

2. **Part Evaluation**:

Check voltage

3. **Parts Replacement**:

Use OEM parts

4. **Final Quality Check**:

Test drive vehicle

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## Necessary Equipment

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

|—|—|—|

| Code Reader | Innova | Live data streaming |

| Physical Equipment | Multimeter | Electrical testing |

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## Repair Documentation Sources

### Auto Repair Source

– Features:

Component locations [8]

Factory repair procedures

### Mobile Applications

– Vehicle Service App:

ECU pinouts [5]

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## Affordable Maintenance Advice

– Routine checkups extends vehicle life

– Learn basic diagnostics to prevent mechanic overselling

– Use aftermarket parts when OEM prices prohibitive [7]