880joe Posted June 5, 2019 Share Posted June 5, 2019 I have a 99 CH Mack with Wabco abs brake system can anyone tell me what the 2 3 Blink code is? Quote Link to comment Share on other sites More sharing options...
Mack Technician Posted June 7, 2019 Share Posted June 7, 2019 If its a 2-3 code for the truck its the intake Air Sensor. The ECU sets the code when the intake air sensor signal voltage goes below 0.4 volts for more than two seconds. If the signal voltage returns, and is between 0.4 and 4.5 volts, for more than 2 seconds, the light goes out and the code is inactive. Check your sensor. It should be..... 9,300 ohms at 32 degrees F (set in fridge) 200 ohms at 194 degrees F (in oven) Quote Link to comment Share on other sites More sharing options...
880joe Posted June 8, 2019 Author Share Posted June 8, 2019 Thank you for the reply but I'm needing abs fault code not engine fault code Quote Link to comment Share on other sites More sharing options...
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