This diagnostic code is set when the SCR temperature module detects a problem with measuring the outlet temperature. Accurate outlet temperature measurement is vital for assessing the performance and efficiency of the SCR system.

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This code is triggered when the SCR temperature module detects a fault with measuring the inlet temperature. This can affect the SCR system’s ability to properly reduce NOx emissions.

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This diagnostic trouble code is set when the Selective Catalytic Reduction (SCR) temperature module detects a problem with measuring the inlet temperature. Accurate temperature measurement is crucial for the proper functioning of the SCR system, which reduces nitrogen oxide (NOx) emissions.

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This code indicates that the resistance in the DEF dosing unit supply line heater circuit is too low. Low resistance typically indicates a short to ground, which can cause the heater to malfunction or fail.

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This diagnostic trouble code is set when the ECU detects that the resistance in the DEF dosing unit supply line heater circuit is too high. High resistance typically indicates an open circuit, which can prevent the heater from functioning properly, potentially leading to DEF freezing in cold conditions.

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This diagnostic code is triggered when the resistance in the DEF dosing unit return line heater circuit is detected to be too low. Low resistance typically indicates a short to ground, which can cause the heater to malfunction or fail.

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This diagnostic trouble code is set when the ECU detects that the resistance in the DEF dosing unit return line heater circuit is too high. High resistance typically indicates an open circuit, which can prevent the heater from functioning properly, potentially leading to DEF freezing in the return line in cold conditions.

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This code indicates that the resistance in the DEF dosing unit pressure line heater circuit is too low. Low resistance typically indicates a short to ground, which can cause the heater to malfunction or fail, potentially affecting DEF injection.

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This diagnostic trouble code is set when the ECU detects that the resistance in the DEF dosing unit pressure line heater circuit is too high. High resistance typically indicates an open circuit, which can prevent the heater from functioning properly, potentially leading to DEF freezing in cold conditions.

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This diagnostic trouble code is triggered when the DEF dosing unit pressure signal exceeds a threshold value during the suction process. This condition indicates that there may be an issue with the pressure regulation or sensor accuracy.

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This code indicates that the DEF dosing unit pressure is detected to be moderately low. Insufficient pressure can prevent the proper injection of DEF, reducing the effectiveness of the aftertreatment system.

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