DL 501 TCM mechatronics repair

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Price Exclusive of GST


Our assessment fee is $150 + GST.
If you choose to proceed with the repair, this fee is applied towards the total repair cost. It is only charged separately if you decide not to proceed after the assessment.

Our full terms of trade can be found here. 

Has repair work been attempted by your customer? Link here !

Heavy Diesel or Industrial Repair you need? Link here for a solution!

Please only just send in the Control unit not the whole valve body !  

Common Failure symptoms:

  • No reverse gear
  • No gears above 1st
  • Gears sticking
  • No gears at all
  • Limp home mode
  • Harsh gear change
  • Jerking / behaving erratically

Common fault codes:

  • P0726 – RPM Signal Of Engine Control Unit (Implausible Signal)
  • P173C – Valve 1 In Sub-gearbox 1 (Electrical Fault)
  • P173F – Valve 2 In Sub-gearbox 1 (Electrical Fault)
  • P1740 – Clutch Temperature Monitoring
  • P174A – Valve 3 In Sub-gearbox 1 (Electrical Fault)
  • P174B – Valve 4 In Sub-gearbox 1 (Electrical Fault)
  • P174C – Valve 1 In Sub-gearbox 2 (Electrical Fault)
  • P174C – Valve 2 In Sub-gearbox 2 (Electrical Fault)
  • P174E – Valve 3 In Sub-gearbox 2 (Electrical Fault)
  • P174F – Valve 4 In Sub-gearbox 2 (Electrical Fault)
  • P176A – Gear Actuator/Selector 1 (Not Adjustable)
  • P176A – Selector 1 Cannot Be Regulated
  • P176B – Selector 2 Cannot Be Regulated
  • P176B – Gear Actuator/Selector 2 (Not Adjustable)
  • P179C – Main Pressure Valve (Electrical Fault)
  • P179D – Cooling Oil Valve (Electrical Fault)
  • P17D4 – Valve 2 in Sub-gearbox 1 (Mechanical Malfunction)
  • P17D4 – Valve 3 In Sub-gearbox 1 (Mechanical Malfunction)
  • P17D5 – Valve 3 in Sub-gearbox 2 (Mechanical Malfunction)
  • P17D6 – Clutch 1 Pressure Too High
  • P17D7 – Clutch 2 Pressure Too High
  • P17D8 – Torque Limitation Due To Clutch Temperature
  • P17E0 – Gear Actuator 1 Mechanical Error
  • P17E0 – Gear Actuator/Selector 1 (Mechanical Error)