Manual transmission has suddenly become very difficult to put into 1st & reverse on 2007 Ford Ranger

and difficult to change gears only 45000 mi. on truck.

Asked by for the 2007 Ford Ranger
Check engine light is most likely a different issue but I would inspect the clutch hydraulic system, look for leaks, check the fluid level, perhaps the clutch master or slave cylinder is failing.
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does the clutch pedal feel different. if it does you may have a bad cable or a failing hydraulic system. if the clutch feels ok then you may have a linkage or internal problem. bring it in for a free inspection and estimate.
the clutch doesn't feel any different. Also the check engine light is on. We had it serviced at 40,000 mi