### P0420 Emissions Control Malfunction
– Typical Sources:
Worn catalytic converter [1]
– Recommended Fixes:
Repair exhaust system https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Likely Problems:
Faulty MAF sensor
– Diagnostic Steps:
Inspect injectors [1][7]
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## Car Maintenance Terms
### ABS (Anti-Lock Brake System)
– Purpose: Prevents wheel lockup [7]
### Vehicle Computer System
– Role: Controls ignition timing [7]
### Powertrain Elements
– Contains: Transmission [7]
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## Mechanical Fixing Workflow
1. **Symptom Assessment**:
Conduct road test
2. **Component Testing**:
Check voltage
3. **Component Installation**:
Follow torque specs
4. **Post-Repair Verification**:
Test drive vehicle
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Diagnostic Scanner | BlueDriver | Retrieve DTCs |
| Physical Equipment | Torque wrench | Component repair |
—
## Repair Documentation Sources
### Vehicle Service Database
– Capabilities:
Component locations [8]
OEM specifications
### Mobile Applications
– Auto Repair Documents:
Component testing guides [5]
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## Affordable Maintenance Advice
– Regular maintenance avoids costly repairs
– Understand DTC meanings to prevent mechanic overselling
– Install quality alternatives when OEM prices prohibitive [7]