### P0420 Catalytic Converter Issue
– Frequent Reasons:
Faulty oxygen sensor [1]
– Recommended Fixes:
Replace catalytic converter https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Potential Issues:
Faulty MAF sensor
– Testing Procedure:
Inspect injectors [1][7]
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## Vehicle Service Vocabulary
### ABS (Anti-Lock Brake System)
– Purpose: Prevents wheel lockup [7]
### ECM/ECU (Engine Control Module)
– Role: Manages fuel injection [7]
### Powertrain Elements
– Contains: Drive axles [7]
—
## Repair Process Steps
1. **Problem Identification**:
Perform visual inspection
2. **Component Testing**:
Check voltage
3. **Parts Replacement**:
Clear error codes
4. **System Validation**:
Test drive vehicle
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Innova | Retrieve DTCs |
| Hand Instruments | Smoke machine | Electrical testing |
—
## Service Information References
### Mechanical Information System
– Features:
Component locations [8]
Technical illustrations
### Digital Assistants
– Auto Repair Documents:
Electrical diagrams [5]
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## Cost-Saving Tips
– Regular maintenance extends vehicle life
– Master code scanning to prevent mechanic overselling
– Use aftermarket parts when OEM prices prohibitive [7]