### P0420 Emissions Control Malfunction
– Common Causes:
Worn catalytic converter [1]
– Common Solutions:
Replace catalytic converter https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Likely Problems:
Vacuum leaks
– Testing Procedure:
Smoke test intake [1][7]
—
## Auto Repair Terminology
### Electronic Braking System
– Function: Prevents wheel lockup [7]
### ECM/ECU (Engine Control Module)
– Role: Monitors sensors [7]
### Powertrain Elements
– Includes: Drive axles [7]
—
## Service Procedure Stages
1. **Symptom Assessment**:
Perform visual inspection
2. **System Verification**:
Check voltage
3. **Parts Replacement**:
Clear error codes
4. **Post-Repair Verification**:
Ensure proper operation
—
## Essential Tools
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Innova | Retrieve DTCs |
| Hand Instruments | Smoke machine | Component repair |
—
## Service Information References
### Vehicle Service Database
– Features:
Component locations [8]
Factory repair procedures
### Smartphone Tools
– Auto Repair Documents:
Component testing guides [5]
—
## Budget Repair Strategies
– Regular maintenance prevents major failures
– Learn basic diagnostics to prevent mechanic overselling
– Install quality alternatives when OEM prices prohibitive [7]