Thermo King SB3 + CODE 20 Vapor Motor CR

Discussion in 'Refrigerated Trucking Forum' started by Jezwa, Aug 14, 2019 at 12:15 AM.

  1. Jezwa

    Jezwa Bobtail Member

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    Jul 26, 2019
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    Thermo King SB3 + Started throwing A Code 20 and will not start in auto start. I replaced the fuel Filter but it did not fix the problem, After I clear the Code I can start it in Manuel Mode. Any help?
     
  2. 062

    062 Road Train Member

    2,064
    3,295
    Oct 20, 2013
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    Several things can cause that code. When it starts does it sputter? What is the battery voltage?
    On the one I have it was a bad ground. You’ll have a main ground for the battery, then another with 3-4 wires. My problem was with the 3-4 wire ground.
     
  3. Jezwa

    Jezwa Bobtail Member

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    1
    Jul 26, 2019
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    I will look and see. I thought maybe it was vapor locking . Once I clear the code and flip at the manual it starts just fine .
     
  4. Jezwa

    Jezwa Bobtail Member

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    1
    Jul 26, 2019
    0
    Voltage is 13.6 oil is 63 psi coil 32.6 the Amb air don’t work. Rpm 1600 DDUR 43
    Hours 35218 water Temp 184.3F
    Amps 0.8
     
  5. reeferwrencher

    reeferwrencher Bobtail Member

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    19
    Aug 4, 2018
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    Fuel solenoid isn't energizing in auto. Do you know if the engine is yanmar or isuzu ?
     
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