Code Enable Criteria

WARNING: This page is about a different car, the 2001 Saturn LW300 and 2001 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

Ratio of TP sensor No. 1 to TP sensor No. 2 is less than 0.5 (TP angle less than 30 percent).
TP sensor No. 1 and TP sensor No. 2 signal deviation is less than 0.6 percent (TP sensor signals correlate with each other).
Engine has been running for more than 0.3 second.
Ignition voltage is more than 11 volts.
Short Term Fuel Trim (STFT) is -7.7-7.7 percent at idle and -24-21 percent at medium and high engine load.
No TP DTCs are set.

DTC sets when MAF sensor airflow value is too far out of agreement from ECM calculated airflow value (based on engine speed and TP sensor).