### P0420 Catalytic Converter Issue
– Frequent Reasons:
Exhaust leaks [1]
– Common Solutions:
Replace catalytic converter https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Likely Problems:
Vacuum leaks
– Troubleshooting Process:
Check fuel pressure [1][7]
—
## Vehicle Service Vocabulary
### Electronic Braking System
– Function: Prevents wheel lockup [7]
### Vehicle Computer System
– Responsibility: Controls ignition timing [7]
### Drivetrain Components
– Contains: Transmission [7]
—
## Service Procedure Stages
1. **Problem Identification**:
Scan DTCs
2. **Part Evaluation**:
Measure resistance
3. **Defective Unit Swap**:
Clear error codes
4. **Final Quality Check**:
Confirm warning light reset
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Autel | Retrieve DTCs |
| Hand Instruments | Smoke machine | Electrical testing |
—
## Repair Documentation Sources
### Mechanical Information System
– Capabilities:
Component locations [8]
OEM specifications
### Digital Assistants
– Auto Repair Documents:
Electrical diagrams [5]
—
## Cost-Saving Tips
– Routine checkups prevents major failures
– Learn basic diagnostics to prevent mechanic overselling
– Use aftermarket parts when budget constrained [7]
