## Typical Automotive DTCs

### P0420 Catalytic Converter Issue

– Common Causes:

Faulty oxygen sensor [1]

– Common Solutions:

Replace catalytic converter https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Potential Issues:

Fuel delivery problems

– Testing Procedure:

Check fuel pressure [1][7]

—

## Auto Repair Terminology

### Skid Prevention Technology

– Purpose: Enables safe braking [7]

### Vehicle Computer System

– Responsibility: Monitors sensors [7]

### Drivetrain Components

– Contains: Drive axles [7]

—

## Service Procedure Stages

1. **Initial Diagnosis**:

Conduct road test

2. **Part Evaluation**:

Test continuity

3. **Parts Replacement**:

Clear error codes

4. **Final Quality Check**:

Confirm warning light reset

—

## Necessary Equipment

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

|—|—|—|

| Code Reader | Innova | Retrieve DTCs |

| Mechanical Tools | Torque wrench | Component repair |

—

## Service Information References

### Auto Repair Source

– Features:

TSB access [8]

OEM specifications

### Digital Assistants

– Auto Repair Documents:

Electrical diagrams [5]

—

## Budget Repair Strategies

– Regular maintenance avoids costly repairs

– Master code scanning to prevent mechanic overselling

– Select certified components when OEM prices prohibitive [7]