## Typical Automotive DTCs

### P0420 Emissions Control Malfunction

– Frequent Reasons:

Exhaust leaks [1]

– Recommended Fixes:

Replace catalytic converter https://carautorepair.site/

### P0171 Air-Fuel Ratio Error

– Potential Issues:

Faulty MAF sensor

– Testing Procedure:

Check fuel pressure [1][7]

—

## Auto Repair Terminology

### Skid Prevention Technology

– Purpose: Enables safe braking [7]

### Vehicle Computer System

– Role: Controls ignition timing [7]

### Powertrain Elements

– Includes: Drive axles [7]

—

## Repair Process Steps

1. **Problem Identification**:

Perform visual inspection

2. **Component Testing**:

Check voltage

3. **Component Installation**:

Follow torque specs

4. **Post-Repair Verification**:

Ensure proper operation

—

## Necessary Equipment

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

|—|—|—|

| Code Reader | Innova | Retrieve DTCs |

| Hand Instruments | Smoke machine | Component repair |

—

## Technical Data Resources

### Auto Repair Source

– Capabilities:

Wiring diagrams [8]

Factory repair procedures

### Digital Assistants

– Auto Repair Documents:

Electrical diagrams [5]

—

## Affordable Maintenance Advice

– Regular maintenance prevents major failures

– Master code scanning to prevent mechanic overselling

– Install quality alternatives when budget constrained [7]