## Typical Automotive DTCs

### P0420 Emissions Control Malfunction

– Typical Sources:

Worn catalytic converter [1]

– Suggested Repairs:

Replace catalytic converter https://carautorepair.site/

### P0171 Fuel Mixture Imbalance

– Likely Problems:

Fuel delivery problems

– Troubleshooting Process:

Check fuel pressure [1][7]

## Auto Repair Terminology

### Skid Prevention Technology

– Function: Enables safe braking [7]

### Engine Management Unit

– Responsibility: Controls ignition timing [7]

### Powertrain Elements

– Contains: Drive axles [7]

## Repair Process Steps

1. **Problem Identification**:

Scan DTCs

2. **Component Testing**:

Check voltage

3. **Component Installation**:

Follow torque specs

4. **System Validation**:

Test drive vehicle

## Necessary Equipment

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

|—|—|—|

| OBD-II Tool | Autel | Live data streaming |

| Hand Instruments | Torque wrench | Component repair |

## Service Information References

### Auto Repair Source

– Capabilities:

TSB access [8]

Technical illustrations

### Digital Assistants

– Vehicle Service App:

ECU pinouts [5]

## Budget Repair Strategies

– Regular maintenance prevents major failures

– Learn basic diagnostics to avoid unnecessary repairs

– Select certified components when budget constrained [7]

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