Not every warning light means the same thing
Dashboard lights get treated as one category, which is why some get ignored that should not be and others cause alarm that is not warranted.
The oil pressure light is the serious one. It is not telling you the oil is low; it is telling you the oil is not being circulated at pressure. Continuing to drive can destroy an engine in a short distance. Stop the vehicle somewhere safe and switch it off.
The temperature warning is the other immediate one. An overheating engine damages itself quickly, and the damage is expensive. Stop, let it cool, and do not open a hot cooling system.
The battery or charging light means the vehicle is running on what is in the battery. It will keep going until it does not, and the distance available is limited.
The check engine light covers an enormous range. Steady, with the vehicle driving normally, it usually means book it in. Flashing is different and means stop driving.
Knowing which of those you have is the difference between a repair and a replacement.
Diagnosis is the first thing being paid for
A code says which circuit noticed something. It does not say what is wrong, and the same code covers faults that differ enormously in cost.
Replacing the part a code names is guessing with parts, and it is how a vehicle acquires three new components and the original symptom. What shortens a diagnosis is a clear description: when it happens, how often, hot or cold, at idle or under load, and what changed before it started.
When a repair may not be worth it
Sometimes it is not, and you should be told that rather than quoted for it.
A large repair on a vehicle with other problems is a decision for the owner with the whole picture in front of them. Ask for that conversation when the number is big.
About this store
The Idaho Falls consumer store handles cars, SUVs, pickups and light trucks, and is managed by Adam Word. Commercial vehicles are at the Purcell store on Andco Dr, which does not offer engine work.
See the national engine repair page for all 33 locations.

