New Holland 5008 – TCM: Rear PTO Solenoid Circuit Overcurrent
Issue description
The control module has detected excessive current in the electrical circuit for the rear PTO engagement solenoid. This over-current condition indicates a higher than normal current draw, typically caused by a short circuit in the wiring harness or an internal short within the solenoid itself. This fault will prevent the PTO from engaging or disengaging correctly. In some systems, this may also be described as the PTO solenoid circuit being shorted to a power source.
Applies to these machines
37 machines- T4.75
- T4.85
- T4.95
- T4.105
- T4.115
- T5.75
- T5.85
- T5.95
- T5.100
- T5.105
- T5.110
- T5.115
- T5.120
- T6.120
- T6.125
- T6.140
- T6.145
- T6.150
- T6.155
- T6.160
- T6.165
- T6.175
- T6.180
- T7000
- T7010
- T7020
- T7030
- T7040
- T7050
- TS Series
- Workmaster Series
- 5640
- 6640
- 7740
- 7840
- 8240
- 8340
Check the cause
Visually inspect the wiring harness and connectors leading to the rear PTO solenoid for damage, chafing, melting, or corrosion.
Check the wiring harness for shorts to ground, ensuring it is not pinched or rubbing against the chassis.
Perform a solenoid resistance test by disconnecting the PTO solenoid and measuring across its terminals (typical resistance is 6-8 ohms; a lower reading indicates an internal short).
Check for stable voltage at the solenoid connector with the key on and the PTO switch engaged.
Repair steps
Isolate the fault
Disconnect the rear PTO solenoid from the wiring harness, clear the 5008 fault code, and activate the rear PTO. If the code does not return, the fault is likely within the solenoid. If it returns immediately, the issue is in the wiring harness.
Repair or replace wiring
If the fault is isolated to the wiring, trace the harness from the solenoid connector back to the control module. Repair any frayed or shorted wires, or replace the harness if damage is extensive.
Replace the PTO solenoid
If diagnostic checks (such as a resistance reading below 6-8 ohms) point to a faulty solenoid, replace it. It is typically located on the rear of the tractor on the hydraulic valve block near the differential housing.
Final verification
Reconnect all connectors, clear any stored fault codes, and operate the rear PTO to ensure the system is functioning correctly.
Parts you might need
(16)- Rear PTO Solenoid87739558
Fits T4, T5, T6 series and Case IH Maxxum. Alternate numbers: 48055262, 5196873, 1931612, 84173878
- Rear PTO Solenoid47658159
Fits TS series. Replaces 9844156, 89844156, 82012815, 81871397
Rear PTO Solenoid
QTP-43604Aftermarket part with green connector for T6/T7 series and Case Puma
PTO Control Module
82011707Verify fitment by serial number
- PTO Control Module81869818
Compatible with 40 Series. Alternate numbers: 81864314, 81867013, F0NN94044N90AA, F0NN94044N90BA, F0NN94044N90BB
Replaces 43836, 87723774
Replaces 87739558, 87577678, 48055262
Replaces 409724. Use if the harness is shorted to ground
Electrical Connector (Female, for PTO Solenoid)
82012083 / 87702671- Rear PTO Solenoid Valve84273815
Fits New Holland T4, T5, and T6 series (e.g., T4.75, T5.115, T6.175). Verify connector color before ordering.
Rear PTO Solenoid Valve
51433464Fits New Holland TD5 series and Case IH Farmall models. Verify connector color before ordering.
- PTO Solenoid48055262
Supersedes several other part numbers
- Rear PTO Engagement Solenoid9844156
Fits New Holland 8870. Must be verified with a dealer using the tractor's serial number.
Rear PTO Solenoid Connector
82012083Superseded by 12452587. Listed as a connector for the Rear PTO Solenoid on a T8 series tractor.
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