This diagnostic trouble code, AIC 521132.31, occurs when the CommandQuad™ transmission system detects a fault with range switch C, causing it and potentially other switches to be read as simultaneously pressed. This issue may be due to a mechanical defect…
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John Deere AIC codes
This error code, AIC 521128.31, signals a conflict within the CommandQuad™ transmission system, specifically involving the range switch CDE. The fault is identified when multiple range switches are erroneously read as being pressed simultaneously, which can lead to incorrect gear…
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John Deere AIC codes
This code, AIC 520870.02, indicates a significant issue with the Armrest Interface Control Unit (AIC), specifically a calibration fault or failure in the calibration memory. This problem can arise from corrupt data, software malfunctions, or hardware failures that affect the…