Vehicle Diagnostics & Check Engine Light in Edmonton

No — pull over when it's safe and shut it down. A flashing light means an active misfire dumping raw fuel into the catalytic converter, which can overheat and destroy it within minutes. That turns a spark plug or coil repair into a converter replacement costing thousands. A steady light is less urgent, but get it read soon.

A free scan is a fine starting point — it tells you the code. It doesn't tell you why. A P0171 lean code can be a vacuum leak, a dirty airflow sensor, a fuel pump, or an exhaust leak, and each has a very different price tag. Our fee buys the testing that identifies which one it is, which is almost always cheaper than buying parts on a guess.

Typically $120–$180 depending on the problem, quoted before we start. Straightforward issues are diagnosed within that; genuinely tricky electrical faults can take longer, and we'll talk to you before spending more of your money. You get written findings and a repair quote either way — the diagnosis is yours whether or not we do the repair.

Depends what set it. Some codes are minor. Others — running lean, misfires, overheating-related codes — do cumulative damage or burn extra fuel every day. The honest answer is you don't know which kind you have until it's read and diagnosed, so at minimum find out what the code is before deciding to ignore it.

It clears the code, and if the problem is real the light comes back — usually with less freeze-frame data for whoever diagnoses it next. It also resets the computer's learned values, so the vehicle may idle and shift oddly for a while. Fix the cause; the light takes care of itself.

Common, yes; normal, not exactly. Deep cold exposes weak thermostats, tired batteries, and marginal sensors. The most frequent one we see is P0128 — a thermostat stuck open so the engine never fully warms up. It feels harmless, but it means poor heat, worse fuel economy, and extra engine wear all winter. Cheap fix, worth doing.