## Frequent Vehicle Error Codes

### 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]

## 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]

## 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

## 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]

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