No voltage at AF sensor (pre-CAT O2 sensor)
Okay, car is steadily improving. Now I am trying to get the MIL/CEL light out. The code originally read heater malfunction AF sensor 1. Since the sensor had 'spliced' wires, I opted to buy a new sensor and replace it. Having done that, the MIL is still on despite repeated code erasures. Soooo I turned on the scanner to monitor data and low and behold, #1 sensor shows no voltage. (Number 2 sensor is just fine). Before I go through the tedious process of tracing wires for voltage drop, is there a known ailment for the AF sensor that would prevent it getting voltage? (2001 CVT w/196000 miles). Thanks.