# How to Fix John Deere Diagnostic Code SSU 522451.14
John Deere tractors and other work vehicles use a series of electronic diagnostic codes to relay electrical problems the tractor may be having. Diagnostic code SSU-522451.14 is an auto-trac steering system control unit diagnostic trouble code. Specifically, this code refers to the steering wheel position sensor. If this code comes up, it likely means the steering wheel position sensor needs to be replaced.
Things You'll Need
- Adjustable wrench
Instructions
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1
Open the engine compartment and remove the negative battery cable with the adjustable wrench.
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2
Locate the back side of the steering wheel column inside the engine compartment and locate the small box mounted to the shaft that is connected to a plastic wiring harness. This is the steering wheel position sensor
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3
Unplug the wiring harness by hand and remove the retaining screw holding the old sensor in place with a Phillips screwdriver.
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4
Attach the new switch with the screwdriver and plug it into the plastic wiring harness.
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5
Replace the Deere's negative battery cable with the adjustable wrench.
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1
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