Reduced Engine Power Diag
09-23-2015, 08:03 PM
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Reduced Engine Power Diag
I've got a 2007 SC Cobalt that keeps going into Reduced Engine Power mode. First time it did it the DTC was P1681. I replaced the throttle body with a new one shortly before it threw the timing chain and bent the valves. I replaced the valves and chain and then it started going into Reduced Engine Power mode again. First time I checked DTC's it had P0171 P2135 and P2119. I cleared these and a day later it set DTC's P2135 and P1681.
Does anyone have any ideas or the diagnostic flow charts for P1681?
Does anyone have any ideas or the diagnostic flow charts for P1681?
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