### P0420 Emissions Control Malfunction
– Frequent Reasons:
Worn catalytic converter [1]
– Suggested Repairs:
Repair exhaust system https://carautorepair.site/
### P0171 System Too Lean
– Potential Issues:
Fuel delivery problems
– Testing Procedure:
Smoke test intake [1][7]
—
## Vehicle Service Vocabulary
### Skid Prevention Technology
– Function: Maintains steering control [7]
### Vehicle Computer System
– Responsibility: Manages fuel injection [7]
### Transmission System Parts
– Contains: Differential [7]
—
## Repair Process Steps
1. **Problem Identification**:
Scan DTCs
2. **System Verification**:
Measure resistance
3. **Parts Replacement**:
Follow torque specs
4. **System Validation**:
Test drive vehicle
—
## Critical Instruments
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| Code Reader | BlueDriver | Retrieve DTCs |
| Physical Equipment | Smoke machine | Component repair |
—
## Service Information References
### Vehicle Service Database
– Capabilities:
Component locations [8]
Technical illustrations
### Digital Assistants
– Auto Repair Documents:
Component testing guides [5]
—
## Budget Repair Strategies
– Preventative service avoids costly repairs
– Understand DTC meanings to avoid unnecessary repairs
– Select certified components when budget constrained [7]
