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P0243 Diagnostic Trouble Code Discussion for October 2013

Supercharger Boost Solenoid Control Circuit Malfunction

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Trouble Ticket Help Requests for DTC P0243
Help Request Posted
2005 Pontiac Grand Prix GTP 3.8L Misfire, MIL Lamp on VIN: 2G2WR52445
P0243: boost solenoid control ckt. This one is killing me. First are the known issues. The exhaust crossover is cracked, the boost control solenoid is bad. When started cold it runs fine. About a minute after entering closed loop cyls 1 and 3 begin to misfire. Engine is shaking and CKP relearn ...
October 17, 2013