Hi folks, looking again for a possible cause of an automotive problem, or more specifically, the cause for the computer setting the P0340 DTC, as the car starts and runs fine. The stated reasons in a google search for the code being set vary from bad sensors, bad wiring, bad PCM, bad alternator, stretched timing belt, damaged or dirty reluctor ring, weak battery etc. etc.
The most crucial information is that there are absolutely no driveability problems with this car. It belongs to my neighbor. His wife just bought it a few weeks ago from a relative after she wrecked her car. He drives it and she drives his 1998 Jeep GC, which is known to be reliable. He says the car scares him because it has so much power.
Another piece of relevant info is that after getting the codes cleared, it took over a week of daily about town driving for the code to get set again.
I should also mention that the computer also sets the P0128 DTC, which seems unrelated to me. Any clues as to this behavior, setting the P0340 DTC, but no driveability problems?