Vehicle Diagnostics in Burnaby
Accurate Check Engine Light Diagnostics and Full-System Testing
When your check engine light comes on, your vehicle starts running rough, or something just doesn’t feel right, guessing can get expensive fast. At Crompton Brothers Automotive, we provide accurate, professional vehicle diagnostics in Burnaby to identify the real cause of the problem — so you can repair it correctly the first time.
Serving Burnaby since 1980, we help drivers and local businesses get clear answers and dependable solutions. Whether it’s an intermittent warning light, poor performance, an electrical issue, or a no-start problem, our technicians use proven diagnostic processes and modern equipment to pinpoint the issue and explain your best options.
What Is Vehicle Diagnostics?
Vehicle diagnostics is the process of testing your vehicle’s systems to identify why a warning light is on, why performance has changed, or why a component is failing. Modern vehicles rely on sensors, modules, and computer-controlled systems. When something is off, the vehicle stores information (fault codes and data) that helps determine what’s happening.
A proper diagnostic isn’t just plugging in a scanner and reading a code. Codes are clues — the real job is identifying the root cause behind the symptom.
Signs You May Need Diagnostics
If you notice any of the following, it’s time to book diagnostic testing:
- Check Engine Light (steady or flashing)
- Warning lights for ABS, traction control, or airbag systems
- Rough idle, hesitation, or loss of power
- Poor fuel economy
- Stalling, hard starts, or a no-start condition
- Misfires, shaking, or unusual vibrations
- Overheating or coolant loss
- Electrical issues (battery drain, lighting problems, power accessories failing)
- Burning smells, unusual noises, or fluid leaks
- A/C or heating not working properly
- Transmission shifting issues (slipping, delayed engagement, hard shifts)
If the light is flashing, stop driving when safe and contact a shop — a flashing check engine light can indicate an active misfire that may damage the catalytic converter.
Our Diagnostic Process at Crompton Brothers Automotive
We follow a structured diagnostic workflow designed to avoid wasted parts and unnecessary repairs.
1) Confirm the Concern
We begin by confirming the issue you’re experiencing, including when it happens and what symptoms you’ve noticed.
2) Scan for Codes and Read Live Data
We use professional diagnostic tools to retrieve fault codes and analyze live sensor data, freeze-frame data, and system readiness status.
3) Perform Targeted Testing
Depending on the concern, we may perform:
- Electrical testing (voltage drop, continuity, load testing)
- Sensor and actuator testing
- Smoke testing for vacuum or EVAP leaks
- Fuel pressure and fuel delivery testing
- Cooling system pressure testing
- Charging/starting system testing
- Road testing and performance verification
4) Identify Root Cause and Provide Clear Options
Once the root cause is verified, we explain:
- What’s failing (and why)
- What needs repair now vs what can be monitored
- Estimated costs and timelines
We never perform repairs without your approval, and we take pride in honest recommendations and straightforward communication.
What We Diagnose
Our Burnaby diagnostics cover a wide range of systems, including:
Check Engine Light Diagnostics
We diagnose the underlying issue behind OBD-II codes such as:
- Misfires (P0300–P030X)
- Oxygen sensor and fuel trim issues
- Catalytic converter efficiency issues
- Intake leaks and airflow problems
- EVAP system leaks and purge issues
Electrical Diagnostics
Electrical problems are common — and often misdiagnosed. We test issues such as:
- Battery drains / parasitic draws
- Charging system problems (alternator, wiring, connections)
- Starter and ignition circuit issues
- Faulty modules, relays, fuses, or wiring damage
- Intermittent electronic failures
ABS / Traction Control / Stability Control
If ABS or traction lights come on, we diagnose:
- Wheel speed sensors
- Tone rings / reluctor issues
- ABS modules and wiring
- Brake hydraulic and control faults
Cooling System and Overheating Concerns
We diagnose overheating, coolant leaks, and poor heat output using:
- Pressure tests
- Thermostat checks
- Cooling fan and sensor testing
- Radiator and hose inspections
If your A/C is weak or your cabin heat isn’t working, we diagnose:
- Refrigerant charge and leak issues
- Compressor and pressure switch faults
- Blend door and HVAC control problems
- Cooling fan and engine temp factors affecting A/C performance
Transmission and Drivability Diagnostics
If you notice shifting issues or driveline concerns, we diagnose:
- Transmission performance data and codes
- Fluid condition and related system faults
- Mounts, driveline components, and related sensors
Why Proper Diagnostics Saves You Money
Replacing parts based on assumptions often leads to:
- Paying for parts you didn’t need
- Returning for the same issue
- Extended downtime
- Ongoing performance or safety concerns
Professional diagnostics reduces the risk of “parts swapping” and ensures repairs are based on verified findings.
For businesses and fleet managers, accurate diagnostics also helps reduce downtime and improves scheduling reliability — keeping vehicles on the road and jobs on track.
Transparent Repairs and Warranty You Can Count On
When diagnostic testing identifies a repair, you’ll get clear next steps — and you stay in control.
At Crompton Brothers Automotive:
- We do no repairs without your approval
- We honor our quotes
- We’re proud of our workmanship and stand behind what we do
Repairs include:
- 2-year warranty on parts
- 1-year warranty on labour
Serving Burnaby Drivers and Fleets Since 1980
From everyday commuters to local business vehicles, Crompton Brothers Automotive is trusted in Burnaby for accurate diagnostics and dependable repairs. Our location near Edmonds and Metrotown makes it easy to get in, get answers, and get back on the road.
Book Vehicle Diagnostics in Burnaby
If your vehicle has a warning light on, is running rough, or you’re dealing with an intermittent issue, our diagnostic team can help you find the cause quickly and accurately.
Contact Crompton Brothers Automotive today to book vehicle diagnostics in Burnaby.
Vehicle Diagnostics FAQs
Is reading a code the same as diagnosing the problem?
No. A code is a clue. Proper diagnostics involves testing to confirm the root cause before recommending repairs.
Can I keep driving with the check engine light on?
If it’s a steady light, you may be able to drive short-term, but you should book diagnostics soon. If the light is flashing, stop driving when safe — it can indicate a misfire that may cause serious damage.
Do you diagnose electrical problems?
Yes. We diagnose battery drains, charging issues, wiring faults, module issues, and intermittent electrical problems.
Do you work on all makes and models?
Yes. We provide diagnostics for all makes and models, including fleet vehicles.
Do you repair the issue after diagnostics?
If you approve the repair, we can proceed. We’ll explain the options, provide a quote, and only do the work with your authorization.
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Burnaby, BC V3N 1B8
CLIENT REVIEWS
We honour and do work for the following warranty companies:
