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P003A Diagnostic Trouble Code Discussion for March 2013

Turbocharger Boost Control Position Not Learned

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Trouble Ticket Help Requests for DTC P003A
Help Request Posted
2006 Chevrolet C5500 Kodiak C5C042 6.6L Over revving VIN: 1GBE5C1206
P003A: Boost control position not learned. While checking for the turbo position codes, the engine started over revving and bent push rods and broke rockers. The tech was using some cleaner to clean some carbon but was very slight amount. At the time we were assuming the cleaner did it. After repairing...
March 21, 2013
2006 Chevrolet Silverado 3500 LT 6.6L MIL Lamp on VIN: 1GCHK39D16
P003A: Turbocharger Boost Control Position Not Learned. ... "d" lbz that we installed new head gaskets and cleaned the turbo unison ring. Since then, the turbo will not learn position. It will set a code p003a. We have removed the valve from the turbo and confirmed full range of motion of the unison ring pl...
March 21, 2013