Honest, Fair, and Affordable Mobile Auto Repairs in
​Round Rock, Georgetown, Pflugerville, Hutto, Cedar Park, & North Austin, Texas. 
​Call or Text 737-900-3213

Seeing check engine lights can feel scary.
Don't stress, our mobile auto repair mechanics in Round Rock, Georgetown, Pflugerville, Hutto, Cedar Park, and North Austin, Texas can help.

We'll drive out to diagnose the issue, give you a fair price, and make the repair onsite. 

Our check engine light (CEL) diagnostic aims to identify the cause of the illuminated warning light on your dashboard. Here’s what it typically includes:

• OBD-II Scan: Connecting an OBD-II scanner to the vehicle’s diagnostic port to retrieve trouble codes (DTCs) stored in the engine control module (ECM). Codes point to specific issues, like misfires, oxygen sensor faults, or emissions problems.
• Code Interpretation: Analyzing the retrieved codes (e.g., P0300 for random misfire) and any freeze-frame data (snapshot of engine conditions when the code was set) to narrow down the cause.
• Visual Inspection: Checking related components for obvious issues, such as loose or damaged wiring, disconnected vacuum hoses, or visible wear on parts like the gas cap or sensors.
• Sensor and Actuator Testing: Inspecting and testing components indicated by the codes, such as oxygen sensors, mass airflow (MAF) sensors, throttle position sensors, or catalytic converters, using tools like multimeters or scan tools for live data.
• Fuel System Check: Evaluating fuel pressure, fuel pump operation, or injectors if codes suggest fuel delivery issues (e.g., lean or rich conditions).
• Ignition System Check: Examining spark plugs, ignition coils, or wiring if misfire or ignition-related codes are present.
• Emissions System Inspection: Checking components like the EGR valve, evaporative emissions (EVAP) system, or catalytic converter for faults, as these are common CEL triggers.
• Live Data Monitoring: Using a scan tool to observe real-time data (e.g., sensor readings, fuel trim, or engine RPM) while the engine is running to pinpoint abnormal behavior.
• Road Test: Driving the vehicle (if safe) to replicate conditions that triggered the code, monitoring live data to confirm the issue.
• Clearing Codes (if needed): Resetting the CEL after noting codes to see if it returns, helping confirm whether the issue is intermittent or persistent.

Complete the form or call/text 737-900-3213 to schedule your trusted mobile auto repair today. ​