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While you're cruising in your 2010 Ford Ranger, you suddenly spot the check engine light shining brightly on your dashboard. Typically, this indicates that it's time for some routine maintenance on your car, like checking the oil levels, cabin air and fuel filters, and rotating your tires. However, when it comes to the mysterious check engine light, there could be various underlying issues at play. The most common culprit is usually just a loose fuel cap. If that's not the case, it might be a malfunctioning oxygen sensor or damage to the spark plugs. Replacing the oxygen sensor can set you back between $40 and $85, while changing the spark plugs typically costs between $8 and $24.
Some reasons the check engine light may illuminate on a 2010 Ford Ranger include a loose fuel cap, a faulty oxygen sensor, or worn-out spark plugs.