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WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2001 Saturn SW2, 2001 Saturn SL2, 2001 Saturn SL1, 2001 Saturn SL, and 2001 Saturn SC2. However, it is still accessible from the selected car via links, so may be relevant.
DTC P1626 will set if PCM lest Class II communications with the BCM or the fuel decision timer timed out after 5 seconds of engine run time. Timer will time out if no DTC was received within 5 seconds of engine run time.