Medium and Heavy Trucks
Have a 2015 Volvo VNL with a D13 has a code 204a reductant sensor circuit and spn 4334 def doser absolute pressure,
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Customer: Have a 2015 Volvo VNL with a D13 has a code 204a reductant sensor circuit and spn 4334 def doser absolute pressure , current below normal or open circuit any help with would be appreciated
Answered by Steven Welling in 7 mins 1 year ago
Steven Welling
Auto Mechanic
14,562 satisfied customers
Specialities include: Auto Body Technician, Heavy Equipment Repairs, Heavy Duty Engine Repairs, Brake and Transmission Repairs
Hello and thank you for using Just Answer. My name is ***** ***** I’d like to try and help. Please allow me a few moments to look over your question and I will be right back with you.
On your question, these are both components within the def pump assembly. The first thing I would do is inspect the connector on the def pump itself. Then follow the harness back to the main connector below the acm and check for any corrosion, runs or defects. If that is all fine I would inspect the wiring near the acm. If no defects are found then replace the def pump.
Customer
I will check that out do you have a diagram of the wiring harness
The wiring for the def pump goes as follows. The first number will be the pin location at the acm and the second number is ***** the def pump. The PIN numbers are marked on the connectors. 62-9, 12-12, 8-8, 7-10, 30-3, 51-2,
Customer
I should have continuity between those connectors on those wires?
Customer
Found a broken wire in the harness repaired and light went out. Thanks for the assistance
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BackSteven Welling
14,562 satisfied customers
Auto Mechanic
Steven Welling
Auto Mechanic
14,562 satisfied customers
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