What DCU 19020 Means On a Case IH tractor, fault code DCU 19020 is an emissions / aftertreatment fault reported by the DCU. The official description is: Temperature sensor before catalyst (electrical) | signal low | P0427 Catalyst Temperature Sensor Circuit Low. In practical terms, the DCU is seeing a low electrical signal from the…
What ATC 134 Means On a Case IH tractor, fault code ATC 134 is a climate control fault from the ATC controller. The official description is: Low pressure switch open for more than 1 minute. In practical terms, the controller has detected that the low pressure switch circuit has remained open longer than expected. This…
What ATC 131 Means On a Case IH tractor, fault code ATC 131 is a climate control fault from the ATC controller. The official description is: Low pressure switch (+) input shorted to ground. In practical terms, the ATC controller is detecting that the positive input circuit for the low pressure switch is being pulled…
