### P0420 Catalytic Converter Issue
– Typical Sources:
Faulty oxygen sensor [1]
– Common Solutions:
Replace catalytic converter https://carautorepair.site/
### P0171 System Too Lean
– Likely Problems:
Vacuum leaks
– Troubleshooting Process:
Inspect injectors [1][7]
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## Auto Repair Terminology
### Electronic Braking System
– Purpose: Maintains steering control [7]
### Vehicle Computer System
– Responsibility: Monitors sensors [7]
### Powertrain Elements
– Includes: Differential [7]
—
## Repair Process Steps
1. **Initial Diagnosis**:
Conduct road test
2. **System Verification**:
Check voltage
3. **Defective Unit Swap**:
Use OEM parts
4. **Post-Repair Verification**:
Confirm warning light reset
—
## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Diagnostic Scanner | Autel | Live data streaming |
| Physical Equipment | Multimeter | Electrical testing |
—
## Repair Documentation Sources
### Auto Repair Source
– Capabilities:
TSB access [8]
Technical illustrations
### Digital Assistants
– Vehicle Service App:
ECU pinouts [5]
—
## Cost-Saving Tips
– Preventative service avoids costly repairs
– Understand DTC meanings to avoid unnecessary repairs
– Install quality alternatives when budget constrained [7]
