hi all, Had this light come up two weeks ago. Went into the shop and changed dosage valve. The mechanic also questioned the pump but after changing the valve and doing a regen, the code went away. Now we we have the same issue. Does anyone know what can cause it? The mechanic believes it is Engine related. he is having trouble pulling codes.
SCR Performance low, engine will derate IN..
Discussion in 'Volvo Forum' started by AlexD13, Aug 23, 2017.
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What engine? Year make model would help
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On mine it was the Nox sensors after the dpf and the doc were cleaned. That's one possibility.
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usually nox sensor s need to be replaced, i have a collection of about 50 of them hanging up
KB3MMX and Newto Trucking Thank this. -
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Thanks a lot, mechanic did a regen and it lifted the derate without anything else. Now he has to see what was causing the problem.
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KB3MMX Thanks this.
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did you idle a lot before this came up on the dash.
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