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P204B Diagnostic Trouble Code Discussion for March 2018

testing and results


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Trouble Ticket Help Requests for DTC P204B
Help Request Posted
2013 Chevrolet Silverado 3500 HD WT 6.6L MIL Lamp on VIN: 1GB4KZC8XD
P204B: Reductant pressure sensor performance. ... missing here. Have a P204B code with only 49-52 psi of def pump pressure. No visible leaks found. Replaced reservoir, pump, and the injector. Still not building up enough pressure when doing leak test. Visually checked line O-rings as well. Any ideas to po...
March 09, 2018