525 SPN Fault Code

Name:

Transmission Requested Gear

Description:

Gear requested by the operator, ABS, or engine. Negative values are reverse gears, positive values are forward gears, zero is neutral, parameter specific indicators are listed below. Parameter specific values for this parameter are as follows: FDh = Hold current gear FCh = Forward Drive Position FBh = ‘Park’ position FAh = Forward ‘Low’ position F9h = Upshift 1 gear from current position F8h = Upshift 2 gears from current position F7h = Downshift 1 gear from current position F6h = Downshift 2 gears from current position F5h = D-1: 1st forward selector position referenced from ‘Drive’ F4h = D-2: 2nd forward selector position referenced from ‘Drive’ F3h = D-3: 3rd forward selector position referenced from ‘Drive’ F2h = D-4: 4th forward selector position referenced from ‘Drive’ F1h = D-5: 5th forward selector position referenced from ‘Drive’ F0h = D-6: 6th forward selector position referenced from ‘Drive’ EFh = D-7: 7th forward selector position referenced from ‘Drive’ EEh = Between two s

525 spn fault code name is Transmission Requested Gear. If you don't take the time to look into 525 spn fault when it arises, it can add up quickly. One small issue like 525 can cause a larger component to become damaged without taking the time to investigate. If you suspect your truck is suffering from one of these issues, look into replacing those small components to save money down the road.

Note: The name and description of 525 code represents text descriptions for faults supported by another coding system and does not necessarily comply with SAE J1939. For a specific engine manufacturer's explanation for codes, please consult the engine's technical manual. See also other spn codes.

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