The sensor can't cause a low voltage code unless the element is cracked near one terminal and that won't be intermittent. This is typically caused by a break in the 5.0 volt feed wire to the sensor. That same circuit feeds other sensors too so if they aren't setting codes, the break has to be between the splice and the TPS. A corroded splice is very common.
Measure the voltage on the three TPS wires. One must have 5.0 volts, one will have near 0.2 volts. The middle, (signal) wire will have between 0.5 and 4.5 volts depending on throttle position, and it will have 5.0 volts if you measure it with the connector unplugged from the sensor. Some signal wires will read 0.0 volts when the connector is unplugged but 5.0 volts is much more common.
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Wednesday, April 27th, 2011 AT 7:38 PM