### P0420 Emissions Control Malfunction
– Frequent Reasons:
Exhaust leaks [1]
– Recommended Fixes:
Replace catalytic converter https://carautorepair.site/
### P0171 System Too Lean
– Potential Issues:
Fuel delivery problems
– Diagnostic Steps:
Smoke test intake [1][7]
—
## Car Maintenance Terms
### Electronic Braking System
– Function: Prevents wheel lockup [7]
### Engine Management Unit
– Responsibility: Controls ignition timing [7]
### Transmission System Parts
– Includes: Drive axles [7]
—
## Mechanical Fixing Workflow
1. **Initial Diagnosis**:
Scan DTCs
2. **Component Testing**:
Test continuity
3. **Component Installation**:
Use OEM parts
4. **Post-Repair Verification**:
Test drive vehicle
—
## Critical Instruments
| **Tool Type** | **Examples** | **Purpose** |
|—|—|—|
| OBD-II Tool | Innova | Live data streaming |
| Physical Equipment | Multimeter | Electrical testing |
—
## Repair Documentation Sources
### Mechanical Information System
– Features:
TSB access [8]
OEM specifications
### Digital Assistants
– Vehicle Service App:
Electrical diagrams [5]
—
## Affordable Maintenance Advice
– Routine checkups prevents major failures
– Master code scanning to prevent mechanic overselling
– Install quality alternatives when budget constrained [7]
