51
Switch Signal
No "IDL" signal, "NSW" signal or "A/C" signal to ECU during diagnostic check A/C switch circuit
A/C switch
A/C amplifier
Throttle position sensor circuit
Throttle position sensor
ECU
42
is speed sensor from the back of the speedo to the ecu
34 is abnormal turbo boost pressure so this will come on if u overboost and have no fuel cut defender
sounds like u are overboosting
what psi u running thru the engine
i think they cut out around 12
if u r runnin more then get a fuel cut defender