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Message: <blockquote data-quote="94RedGt" data-source="post: 912522" data-attributes="member: 16001">I was working today in my car and pulled some codes in the process. Heres what i got.564 - Electro-Drive Fan circuit failure172 - o2 Sensor circuit indicates system lean (right side)176 - o2 Sensor circuit indicates system lean (left side)212 - Loss of IDM (Ignition Diagnostic Monitor) input to EEC or SPOUT circuit grounded332 - EGR valve opening not detected538 - Insufficient RPM change during KOER dynamic response test/ Operator error136 - o2 Sensor circuit indicates system lean (left side)116 - ECT out of self test range 0.3 to 3.7 volts112 - ACT Sensor Circuit Below Minimum Voltage of 0.2 volts (O), ACT circuit has intermittently failed below minimum 0.2 volts (M)The last two codes are probably because i did the KOER while the engine was still a bit cold so i migh have to do the running test again but the others i believe are correct. The first code has got me lost , my fan works well, it turns on and off at the proper time and it runs great so i dont know what to look for there. Both o2 sensors are going to be replaced anyways for maintainance reasons so ill see if that takes cares of those codes. Is the EGR code related to the sensor that is mounted on top of the EGR valve ? Because my EGR seems to work fine since it moves up and down when the engine is reved.</blockquote>