Emission Repair & Testing
Expert emission system repair in Annapolis to help your vehicle pass emissions tests and run cleaner. We fix check engine lights and emission problems.
Complete Emission System Services
Expert diagnosis and repair of emission control systems to help your vehicle pass tests and run efficiently.
Catalytic Converter Service
Diagnosis and replacement of catalytic converters for optimal emission control.
- • Converter efficiency testing
- • OEM replacement parts
- • Performance restoration
- • Warranty coverage
Oxygen Sensor Replacement
Replace faulty O2 sensors to improve fuel economy and reduce emissions.
- • Pre and post-cat sensors
- • Wideband sensor service
- • Sensor heater circuit repair
- • Performance monitoring
EGR System Service
Exhaust Gas Recirculation system cleaning and repair services.
- • EGR valve cleaning
- • Valve replacement
- • Passage cleaning
- • Position sensor service
PCV System Service
Positive Crankcase Ventilation system maintenance and repair.
- • PCV valve replacement
- • Hose inspection
- • Breather element service
- • System cleaning
Air Injection System
Secondary air injection system diagnosis and repair services.
- • Air pump replacement
- • Check valve service
- • Diverter valve repair
- • System testing
EVAP System Service
Evaporative emission control system diagnosis and repair.
- • Canister replacement
- • Purge valve service
- • Leak detection
- • Vent valve repair
Common Emission Problems
Symptoms that indicate emission system issues
Check Engine Light
Most common indicator of emission system problems requiring immediate diagnosis.
Poor Fuel Economy
Decreased gas mileage often indicates emission control system inefficiency.
Failed Emissions Test
Vehicle fails state emissions testing due to excessive pollutant levels.
Rough Idle
Engine runs roughly at idle due to emission system component failures.
Maryland Emission Testing Requirements
OBD-II Testing
Modern vehicles undergo computer-based testing through the OBD-II port for emission compliance.
Readiness Monitors
All emission system monitors must be "ready" for your vehicle to pass the test.
Pre-Test Preparation
We ensure your vehicle is properly prepared with completed drive cycles before testing.
Our Emission Diagnostic Process
Comprehensive testing to identify and fix emission problems
Code Reading
Scan for diagnostic trouble codes and freeze frame data
System Testing
Test emission system components and monitor performance
Repair
Replace or repair faulty emission system components
Verification
Complete drive cycles and verify proper system operation
Fix Your Emission Problems Today!
Get your check engine light diagnosed and pass your emissions test with expert emission system repair.