## Common Diagnostic Trouble Codes

### P0420 Catalytic Converter Issue

– Frequent Reasons:

Exhaust leaks [1]

– Recommended Fixes:

Repair exhaust system https://carautorepair.site/

### P0171 System Too Lean

– Possible Defects:

Fuel delivery problems

– Testing Procedure:

Smoke test intake [1][7]

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## Car Maintenance Terms

### Skid Prevention Technology

– Purpose: Prevents wheel lockup [7]

### ECM/ECU (Engine Control Module)

– Responsibility: Manages fuel injection [7]

### Transmission System Parts

– Includes: Differential [7]

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## Service Procedure Stages

1. **Problem Identification**:

Conduct road test

2. **Part Evaluation**:

Measure resistance

3. **Component Installation**:

Follow torque specs

4. **Final Quality Check**:

Confirm warning light reset

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## Necessary Equipment

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

|—|—|—|

| OBD-II Tool | Innova | Retrieve DTCs |

| Hand Instruments | Multimeter | Electrical testing |

—

## Technical Data Resources

### Mechanical Information System

– Capabilities:

Component locations [8]

Factory repair procedures

### Mobile Applications

– Auto Repair Documents:

ECU pinouts [5]

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## Budget Repair Strategies

– Routine checkups extends vehicle life

– Understand DTC meanings to avoid unnecessary repairs

– Install quality alternatives when budget constrained [7]