Connected scanner to obd2 port after check engine light came on, code P1791 came up and says it automatic trans axle concerns. Please advise on what route to go. I can fix the car my self just need to know location and what parts to get
My car has 145680 miles.
My car has an automatic transmission.
Hello - the P1791 code indicates a problem with an internal speed sensor (or governor) within the transmission. This device provide RPM information from the transmission to the transmission controller - which determines when the transmission shifts up to the next gear. You may have noticed that the engine is revving higher before shifting in Drive. I would recommend an inspection of the transmission by a mobile, professional mechanic, such as one from YourMechanic, who will come to your location, diagnose this problem, give you an accurate assessment of damage and cost estimate for repairs.
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