### P0420 Emissions Control Malfunction
– Common Causes:
Worn catalytic converter [1]
– Common Solutions:
Repair exhaust system https://carautorepair.site/
### P0171 System Too Lean
– Potential Issues:
Vacuum leaks
– Testing Procedure:
Smoke test intake [1][7]
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## Vehicle Service Vocabulary
### Skid Prevention Technology
– Function: Prevents wheel lockup [7]
### ECM/ECU (Engine Control Module)
– Role: Manages fuel injection [7]
### Powertrain Elements
– Includes: Transmission [7]
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## Repair Process Steps
1. **Initial Diagnosis**:
Conduct road test
2. **Component Testing**:
Measure resistance
3. **Component Installation**:
Follow torque specs
4. **Post-Repair Verification**:
Ensure proper operation
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## Critical Instruments
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Diagnostic Scanner | Innova | Live data streaming |
| Physical Equipment | Smoke machine | Electrical testing |
—
## Repair Documentation Sources
### Mechanical Information System
– Features:
Component locations [8]
Factory repair procedures
### Mobile Applications
– Vehicle Service App:
Electrical diagrams [5]
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## Budget Repair Strategies
– Regular maintenance avoids costly repairs
– Learn basic diagnostics to prevent mechanic overselling
– Install quality alternatives when OEM prices prohibitive [7]