## Frequent Vehicle Error Codes

### P0420 Catalytic Converter Issue

– Typical Sources:

Worn catalytic converter [1]

– Suggested Repairs:

Replace catalytic converter https://carautorepair.site/

### P0171 Air-Fuel Ratio Error

– Potential Issues:

Fuel delivery problems

– Troubleshooting Process:

Smoke test intake [1][7]

## Auto Repair Terminology

### Electronic Braking System

– Function: Enables safe braking [7]

### Vehicle Computer System

– Responsibility: Controls ignition timing [7]

### Transmission System Parts

– Contains: Transmission [7]

## Service Procedure Stages

1. **Symptom Assessment**:

Scan DTCs

2. **System Verification**:

Measure resistance

3. **Component Installation**:

Clear error codes

4. **Post-Repair Verification**:

Ensure proper operation

## Essential Tools

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

|—|—|—|

| Code Reader | BlueDriver | Live data streaming |

| Mechanical Tools | Torque wrench | Electrical testing |

## Repair Documentation Sources

### Mechanical Information System

– Capabilities:

TSB access [8]

Technical illustrations

### Digital Assistants

– Vehicle Service App:

Component testing guides [5]

## Affordable Maintenance Advice

– Routine checkups avoids costly repairs

– Learn basic diagnostics to avoid unnecessary repairs

– Install quality alternatives when budget constrained [7]

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