Action Taken When The DTC Sets

WARNING: This page is about a different car, the 2002 GMC Sierra, 2002 GMC Cab & Chassis Sierra, 2002 Chevrolet Silverado, and 2002 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

PCM performs the following actions if DTC is set:

Value is defaulted with an unmanaged engine torque value. If P1688 and P1779 are active, value is defaulted with a look-up torque value based on throttle and engine speed. If P1688 and P1779 are active and throttle is defaulted (U1016, U1300 or U1301 active), TCC is disengaged and inhibited.