### P0420 Emissions Control Malfunction
– Frequent Reasons:
Worn catalytic converter [1]
– Suggested Repairs:
Repair exhaust system https://carautorepair.site/
### P0171 Fuel Mixture Imbalance
– Possible Defects:
Fuel delivery problems
– Diagnostic Steps:
Inspect injectors [1][7]
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## Car Maintenance Terms
### ABS (Anti-Lock Brake System)
– Purpose: Maintains steering control [7]
### Engine Management Unit
– Role: Monitors sensors [7]
### Powertrain Elements
– Includes: Transmission [7]
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## Service Procedure Stages
1. **Symptom Assessment**:
Perform visual inspection
2. **System Verification**:
Measure resistance
3. **Component Installation**:
Use OEM parts
4. **Post-Repair Verification**:
Test drive vehicle
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## Necessary Equipment
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | Innova | Retrieve DTCs |
| Hand Instruments | Torque wrench | Component repair |
—
## Technical Data Resources
### Vehicle Service Database
– Capabilities:
Component locations [8]
OEM specifications
### Mobile Applications
– Vehicle Service App:
Electrical diagrams [5]
—
## Affordable Maintenance Advice
– Preventative service extends vehicle life
– Understand DTC meanings to prevent mechanic overselling
– Use aftermarket parts when OEM prices prohibitive [7]