Per the above link: The P0500 is a speed senor malfunction. However, I would think you have to do a throttle relearn first. Is your idle RPM at 650 or higher?
- Search for how to do a throttle relearn and other relearn steps too for your BCM.
- If you still have problems, then maybe you have "wonky" ECM. If so, do a search on one of my threads on how to repair a common diode that causes you ECM to overheat.
I'm not sure where the FX speed sensor is located or if the crank position sensor accomplishes the same task?
How many sensors did you replace? I have a FX45 so my V8 maybe different, but I think the Crank Sensor is the tranny is the same. IDK. If you did not change this, try cleaning the connector first or securing it with a zip tie so it does not move.
Anyway, this is what the above like says about the DTC P0500... it is set when a vehicle’s ECM/PCM detects a loss of signal, or the erratic delivery of a signal, from a vehicle’s speed sensor. In most cases, this speed sensor is seated within the tail shaft of a vehicle’s transmission.
A transmission-mounted vehicle speed sensor determines approximate vehicle speed by counting the individual revolutions of a vehicle’s transmission tail shaft. This is accomplished by counting pulses produced by the teeth of a specialty designed tone ring, as they pass before a speed sensor’s receiver.
This tone ring is mounted to a transmission’s tail shaft and typically features a “toothed” outer edge. As the teeth of a transmission’s tone ring circulate in front of a speed sensor, individual pulses are created, most commonly in the form of a sine or square wave.
The faster a vehicle’s speed, the quicker the succession of these pulses. Therefore, a vehicle’s ECM can use such data as a reliable indicator of vehicle speed.
Note: This thread talks about a "No Start" problem, and more importantly you said you heard a single click!
This thread talks about a "No Start" problem, and more importantly you said you heard a single click!
In my case, this turned out to be BCM related. So I think you need to separate these other DTC problems from your original complaint. You also replaced a lot of sensors, which is a good idea anytime you have more than 125,000 miles, but these are not related to the click or the BCM condition you probably still have.
Suggestions:
• Search my thread on how to clean your fuses;
• And look for information what an Air Conditioning Applifier (AC Amplifier - located under your radio in the dash).
Note: The BCM receives and provides an "ok signal" from several systems in order for your ECM to send a signal to the starter relay which enables you to crank-over your engine.
One possible problem is that when the AC-Amplifier gets old it sinks current away from the BCM (especially in cold weather)... and then the BCM can not tell the ECM it is okay to start your engine. So you hear a single clicking sound when you turn the key -- and your engine will not start.
The cold weather symptom suggests you have a "cracked" or "cold" soldier joint in the AC-Amplifier which is easy to repair if you can open up. Just like most old PC boards including the ECM. So that's what I would do. Or you can bring the board to a radio or satellite tech shop to fix it for you in the $50 range.
Note: In my case, when I hear (heard) a click, I first attached a Lithium Jump Starter Pack to the battery and the engine starts. ==> But the good news is that I fixed this problem (1 year now) by cleaning my fuses next to the emergency brake. However, other owners who live in cold weather report they fixed their no start problem by replacing the AC-Amplifier. (Probably because they did not think they can fix it and/or your local shop does not do board level repair which is too bad.)
0500 and p02a00
